w10n Service: meta for node/opendap/w10n/slav/ATL04_20151028T061609_00970301_941_01.h5
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meta for node/opendap/w10n/slav/ATL04_20151028T061609_00970301_941_01.h5

Parent Node META: json html

Global Attributes
  • HDF5_GLOBAL
    • granule_type
      ATL04
    • short_name
      ATL04
    • level
      2A
    • description
      Along-track normalized relative backscatter profiles at full instrument resolution (normally 25 times per second for ~30m vertical bins). Includes calibration coefficient values calculated in the polar region.
    • contributor_name
      Thomas E Neumann (thomas.neumann@nasa.gov), Thorsten Markus (thorsten.markus@nasa.gov), Suneel Bhardwaj (suneel.bhardwaj@nasa.gov) David W Hancock III (david.w.hancock@nasa.gov)
    • contributor_role
      Instrument Engineer, Investigator, Principle Investigator, Data Producer, Data Producer
    • Conventions
      CF-1.6
    • date_type
      UTC
    • featureType
      trajectory
    • geospatial_lat_units
      degrees_north
    • geospatial_lon_units
      degrees_east
    • identifier_product_doi
      10.5067/ATLAS/ATL04.001
    • identifier_product_doi_authority
      http://dx.doi.org
    • identifier_product_type
      ATL04
    • license
      Data may not be reproduced or distributed without including the citation for this product included in this metadata. Data may not be distributed in an altered form without the written permission of the ICESat-2 Science Project Office at NASA/GSFC.
    • naming_authority
      http://dx.doi.org
    • spatial_coverage_type
      Horizontal
    • standard_name_vocabulary
      CF-1.6
    • time_type
      CCSDS UTC-A
    • date_created
      2018-01-17T03:29:38.000000Z
    • hdfversion
      HDF5 1.8.18
    • history
      2018-01-17T03:29:38.000000Z;A67E7ACC-34AE-406F-DFF5-1CDB5944AD88;Created by PGE atlas_l2a_atm Version 3.1
    • identifier_file_uuid
      A67E7ACC-34AE-406F-DFF5-1CDB5944AD88
    • identifier_product_format_version
      3.1
    • time_coverage_duration
      801.12002301216125
    • time_coverage_end
      2015-10-28T06:29:30.288021Z
    • time_coverage_start
      2015-10-28T06:16:09.167998Z
    • asas_release
      ASAS v4.1
    • geospatial_lat_min
      -0.0012902707602664538
    • geospatial_lon_min
      -170.88174733051255
    • geospatial_lat_max
      49.782642729269220
    • geospatial_lon_max
      -162.74654264353322
    • publisher_name
      NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center
    • publisher_email
      nsidc@nsidc.org
    • publisher_url
      http://nsidc.org/daac/
    • title
      ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles
    • identifier_file_product_type
      ATL04
    • institution
      National Aeronautics and Space Administration (NASA)
    • creator_name
      GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System
    • summary
      The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product.
    • keywords
      EARTH SCIENCE > SPECTRAL/ENGINEERING > LIDAR > LIDAR BACKSCATTER > NONE > NONE > NONE
    • keywords_vocabulary
      NASA/GCMD Science Keywords
    • citation
      Cite these data in publications as follows: The data used in this study were produced by the ICESat-2 Science Project Office at NASA/GSFC. The data archive site is the NASA National Snow and Ice Data Center Distributed Active Archive Center.
    • processing_level
      2A
    • references
      http://nsidc.org/data/icesat2/data.html
    • project
      ICESat-2 > Ice, Cloud, and land Elevation Satellite-2
    • instrument
      ATLAS > Advanced Topographic Laser Altimeter System
    • platform
      ICESat-2 > Ice, Cloud, and land Elevation Satellite-2
    • source
      Spacecraft
  • orbit_info
    • Description
      Contains orbit information.
    • data_rate
      Varies. Data are only provided when one of the stored values (besides time) changes.
    • fullnamepath
      /orbit_info
  • METADATA
    • Description
      ISO19115 Structured Metadata Represented within HDF5
    • iso_19139_dataset_xml
      <?xml version=\"1.0\"?> <gmd:DS_Series xsi:schemaLocation=\"http://www.isotc211.org/2005/gmi http://cdn.earthdata.nasa.gov/iso/schema/1.0/ISO19115-2_EOS.xsd\" xmlns:eos=\"http://earthdata.nasa.gov/schema/eos\" xmlns:gco=\"http://www.isotc211.org/2005/gco\" xmlns:gmd=\"http://www.isotc211.org/2005/gmd\" xmlns:gmi=\"http://www.isotc211.org/2005/gmi\" xmlns:gml=\"http://www.opengis.net/gml/3.2\" xmlns:gmx=\"http://www.isotc211.org/2005/gmx\" xmlns:gsr=\"http://www.isotc211.org/2005/gsr\" xmlns:gss=\"http://www.isotc211.org/2005/gss\" xmlns:gts=\"http://www.isotc211.org/2005/gts\" xmlns:srv=\"http://www.isotc211.org/2005/srv\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"> <gmd:composedOf> <gmd:DS_DataSet> <gmd:has> <gmi:MI_Metadata> <gmd:fileIdentifier> <gmx:FileName>ATL04_20151028T061609_00970301_941_01.h5</gmx:FileName> </gmd:fileIdentifier> <gmd:contact> <gmd:CI_ResponsibleParty> <gmd:organisationName> <gco:CharacterString>NSIDC DAAC &gt; National Snow and Ice Data Center DAAC</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo> <gmd:CI_Contact> <gmd:address> <gmd:CI_Address> <gmd:electronicMailAddress> <gco:CharacterString>nsidc@nsidc.org</gco:CharacterString> </gmd:electronicMailAddress> </gmd:CI_Address> </gmd:address> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://nsidc.org/daac/</gmd:URL> </gmd:linkage> </gmd:CI_OnlineResource> </gmd:onlineResource> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role> <gmd:CI_RoleCode codeList=\"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"pointOfContact\">pointOfContact</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:contact> <gmd:dateStamp> <gco:DateTime>2018-01-17T03:29:38.000000Z</gco:DateTime> </gmd:dateStamp> <gmd:metadataStandardName> <gco:CharacterString>ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data</gco:CharacterString> </gmd:metadataStandardName> <gmd:metadataStandardVersion> <gco:CharacterString>ISO 19115-2:2009-02-15</gco:CharacterString> </gmd:metadataStandardVersion> <gmd:identificationInfo> <gmd:MD_DataIdentification> <gmd:citation> <gmd:CI_Citation> <gmd:title> <gmx:FileName>ATL04_20151028T061609_00970301_941_01.h5</gmx:FileName> </gmd:title> <gmd:date> <gmd:CI_Date> <gmd:date> <gco:DateTime>2018-01-17T03:29:38.000000Z</gco:DateTime> </gmd:date> <gmd:dateType> <gmd:CI_DateTypeCode codeList=\"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode\" codeListValue=\"creation\">creation</gmd:CI_DateTypeCode> </gmd:dateType> </gmd:CI_Date> </gmd:date> <gmd:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ATL04</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>The ECS Short Name</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>001</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>The ECS Version ID</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ATL04_20151028T061609_00970301_941_01.h5</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>ProducerGranuleId</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> </gmd:CI_Citation> </gmd:citation> <gmd:abstract> <gco:CharacterString>The ICESat-2 ATL04 standard data product contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Also includes calibration coefficient values derived from data within the polar regions.</gco:CharacterString> </gmd:abstract> <gmd:status> <gmd:MD_ProgressCode codeList=\"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ProgressCode\" codeListValue=\"onGoing\">onGoing</gmd:MD_ProgressCode> </gmd:status> <gmd:aggregationInfo> <gmd:MD_AggregateInformation> <gmd:aggregateDataSetName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>ATL04</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> <gmd:edition> <gco:CharacterString>001</gco:CharacterString> </gmd:edition> </gmd:CI_Citation> </gmd:aggregateDataSetName> <gmd:associationType> <gmd:DS_AssociationTypeCode codeList=\"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#DS_AssociationTypeCode\" codeListValue=\"largerWorkCitation\">largerWorkCitation</gmd:DS_AssociationTypeCode> </gmd:associationType> </gmd:MD_AggregateInformation> </gmd:aggregationInfo> <gmd:language> <gco:CharacterString>eng</gco:CharacterString> </gmd:language> <gmd:topicCategory> <gmd:MD_TopicCategoryCode>geoscientificInformation</gmd:MD_TopicCategoryCode> </gmd:topicCategory> <gmd:extent> <gmd:EX_Extent> <gmd:geographicElement> <gmd:EX_GeographicBoundingBox> <gmd:extentTypeCode> <gco:Boolean>true</gco:Boolean> </gmd:extentTypeCode> <gmd:westBoundLongitude> <gco:Decimal>-170.881747</gco:Decimal> </gmd:westBoundLongitude> <gmd:eastBoundLongitude> <gco:Decimal>-162.746543</gco:Decimal> </gmd:eastBoundLongitude> <gmd:southBoundLatitude> <gco:Decimal> -0.001290</gco:Decimal> </gmd:southBoundLatitude> <gmd:northBoundLatitude> <gco:Decimal> 49.782643</gco:Decimal> </gmd:northBoundLatitude> </gmd:EX_GeographicBoundingBox> </gmd:geographicElement> <gmd:temporalElement> <gmd:EX_TemporalExtent> <gmd:extent> <gml:TimePeriod gml:id=\"TIME_PERIOD_ID\"> <gml:beginPosition>2015-10-28T06:16:09.167998Z</gml:beginPosition> <gml:endPosition>2015-10-28T06:29:30.288021Z</gml:endPosition> </gml:TimePeriod> </gmd:extent> </gmd:EX_TemporalExtent> </gmd:temporalElement> </gmd:EX_Extent> </gmd:extent> </gmd:MD_DataIdentification> </gmd:identificationInfo> <gmd:dataQualityInfo> <gmd:DQ_DataQuality> <gmd:scope> <gmd:DQ_Scope> <gmd:level> <gmd:MD_ScopeCode codeList=\"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ScopeCode\" codeListValue=\"dataset\">dataset</gmd:MD_ScopeCode> </gmd:level> </gmd:DQ_Scope> </gmd:scope> <gmd:lineage> <gmd:LI_Lineage> <gmd:processStep> <gmi:LE_ProcessStep> <gmd:description> <gco:CharacterString>2018-01-17T03:29:38.000000Z;A67E7ACC-34AE-406F-DFF5-1CDB5944AD88;Created by PGE atlas_l2a_atm Version 3.1</gco:CharacterString> </gmd:description> <gmd:dateTime> <gco:DateTime>2018-01-17T03:29:38.000000Z</gco:DateTime> </gmd:dateTime> </gmi:LE_ProcessStep> </gmd:processStep> </gmd:LI_Lineage> </gmd:lineage> </gmd:DQ_DataQuality> </gmd:dataQualityInfo> </gmi:MI_Metadata> </gmd:has> </gmd:DS_DataSet> </gmd:composedOf> <gmd:seriesMetadata gco:nilReason=\"missing\"/> </gmd:DS_Series>
    • iso_19139_series_xml
      <?xml version=\"1.0\" encoding=\"UTF-8\"?> <gmd:DS_Series xmlns:eos=\"http://earthdata.nasa.gov/schema/eos\" xmlns:gco=\"http://www.isotc211.org/2005/gco\" xmlns:gmd=\"http://www.isotc211.org/2005/gmd\" xmlns:gmi=\"http://www.isotc211.org/2005/gmi\" xmlns:gml=\"http://www.opengis.net/gml/3.2\" xmlns:gmx=\"http://www.isotc211.org/2005/gmx\" xmlns:gsr=\"http://www.isotc211.org/2005/gsr\" xmlns:gss=\"http://www.isotc211.org/2005/gss\" xmlns:gts=\"http://www.isotc211.org/2005/gts\" xmlns:srv=\"http://www.isotc211.org/2005/srv\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.isotc211.org/2005/gmi http://cdn.earthdata.nasa.gov/iso/schema/1.0/ISO19115-2_EOS.xsd\"> <gmd:composedOf gco:nilReason=\"inapplicable\"/> <gmd:seriesMetadata> <gmi:MI_Metadata> <gmd:fileIdentifier> <gco:CharacterString>ATL04.001</gco:CharacterString> </gmd:fileIdentifier> <gmd:language> <gco:CharacterString>eng</gco:CharacterString> </gmd:language> <gmd:characterSet> <gmd:MD_CharacterSetCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_CharacterSetCode\" codeListValue=\"utf8\">utf8</gmd:MD_CharacterSetCode> </gmd:characterSet> <gmd:hierarchyLevel> <gmd:MD_ScopeCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_ScopeCode\" codeListValue=\"series\">series</gmd:MD_ScopeCode> </gmd:hierarchyLevel> <gmd:contact> <gmd:CI_ResponsibleParty> <gmd:organisationName> <gco:CharacterString>NSIDC DAAC &gt; NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo> <gmd:CI_Contact id=\"NSIDC_DAAC_CONTACT_ID\"> <gmd:phone> <gmd:CI_Telephone> <gmd:voice> <gco:CharacterString>303-492-6199</gco:CharacterString> </gmd:voice> <gmd:facsimile> <gco:CharacterString>303-492-2468</gco:CharacterString> </gmd:facsimile> </gmd:CI_Telephone> </gmd:phone> <gmd:address> <gmd:CI_Address> <gmd:deliveryPoint> <gco:CharacterString>1540 30th St Campus Box 449</gco:CharacterString> </gmd:deliveryPoint> <gmd:city> <gco:CharacterString>Boulder</gco:CharacterString> </gmd:city> <gmd:administrativeArea> <gco:CharacterString>Colorado</gco:CharacterString> </gmd:administrativeArea> <gmd:postalCode> <gco:CharacterString>80309-0449</gco:CharacterString> </gmd:postalCode> <gmd:country> <gco:CharacterString>USA</gco:CharacterString> </gmd:country> <gmd:electronicMailAddress> <gco:CharacterString>nsidc@nsidc.org</gco:CharacterString> </gmd:electronicMailAddress> </gmd:CI_Address> </gmd:address> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://nsidc.org/daac/</gmd:URL> </gmd:linkage> </gmd:CI_OnlineResource> </gmd:onlineResource> <gmd:hoursOfService> <gco:CharacterString>9:00 A.M. to 5:00 P.M., U.S. Mountain Time, Monday through Friday, excluding U.S. holidays.</gco:CharacterString> </gmd:hoursOfService> <gmd:contactInstructions> <gco:CharacterString>Contact by e-mail first</gco:CharacterString> </gmd:contactInstructions> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role> <gmd:CI_RoleCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"pointOfContact\">pointOfContact</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:contact> <gmd:dateStamp> <gco:Date>2015-10-15</gco:Date> </gmd:dateStamp> <gmd:metadataStandardName> <gco:CharacterString>ISO 19115-2 Geographic information - Metadata - Part 2: Extensions for imagery and gridded data</gco:CharacterString> </gmd:metadataStandardName> <gmd:metadataStandardVersion> <gco:CharacterString>ISO 19115-2:2009(E)</gco:CharacterString> </gmd:metadataStandardVersion> <gmd:identificationInfo> <gmd:MD_DataIdentification> <gmd:citation> <gmd:CI_Citation> <!-- ECS extracts the LongName from here --> <!-- UMM-C expects the ShortName to precede the LongName separated by a &gt; here --> <gmd:title> <gco:CharacterString>ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles</gco:CharacterString> </gmd:title> <gmd:date> <gmd:CI_Date> <!-- ECS extracts the RevisionDate from here --> <gmd:date> <gco:Date>2016-06-09</gco:Date> </gmd:date> <gmd:dateType> <gmd:CI_DateTypeCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode\" codeListValue=\"revision\">revision</gmd:CI_DateTypeCode> </gmd:dateType> </gmd:CI_Date> </gmd:date> <!-- VersionID is expected to be here by the Base Reference Metadata Model document --> <gmd:edition> <gco:CharacterString>001</gco:CharacterString> </gmd:edition> <gmd:identifier> <gmd:MD_Identifier> <!-- ECS extracts the ShortName from here --> <gmd:code> <gco:CharacterString>ATL04</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>The ECS Short Name</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:identifier> <gmd:MD_Identifier> <!-- ECS extracts the VersionID from here --> <gmd:code> <gco:CharacterString>001</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>The ECS Version ID</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:identifier> <gmd:MD_Identifier> <!-- This field provides the Digital Object Identifier (DOI). --> <gmd:code> <gmx:Anchor xlink:actuate=\"onRequest\" xlink:href=\"http://dx.doi.org/10.5067/ATLAS/ATL04.001\">doi:10.5067/ATLAS/ATL04.001</gmx:Anchor> </gmd:code> <gmd:codeSpace> <gco:CharacterString>gov.nasa.esdis</gco:CharacterString> </gmd:codeSpace> <gmd:description> <gco:CharacterString>A Digital Object Identifier (DOI)</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmd:identifier> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty> <gmd:organisationName> <gco:CharacterString>National Aeronautics and Space Administration (NASA)</gco:CharacterString> </gmd:organisationName> <gmd:role> <gmd:CI_RoleCode codeList=\"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"resourceProvider\">resourceProvider</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty> <!-- ECS expects ProcessingCenter to be here --> <gmd:organisationName> <gco:CharacterString>GSFC I-SIPS &gt; ICESat-2 Science Investigator-led Processing System</gco:CharacterString> </gmd:organisationName> <gmd:role> <gmd:CI_RoleCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"originator\">originator</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> <!-- ECS extracts the VersionDescription from here --> <gmd:otherCitationDetails> <gco:CharacterString>Initial version of the processing software</gco:CharacterString> </gmd:otherCitationDetails> </gmd:CI_Citation> </gmd:citation> <!-- ECS extracts the CollectionDescription from here --> <gmd:abstract> <gco:CharacterString>ATL04 contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Includes calibration coefficient values derived from data within the polar regions.</gco:CharacterString> </gmd:abstract> <gmd:purpose> <gco:CharacterString>The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product.</gco:CharacterString> </gmd:purpose> <gmd:credit> <gco:CharacterString>The software that generates the ATL04 product was designed and implemented within the ICESat-2 Science Investigator-led Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland.</gco:CharacterString> </gmd:credit> <gmd:status> <gmd:MD_ProgressCode codeList=\"http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ProgressCode\" codeListValue=\"onGoing\">onGoing</gmd:MD_ProgressCode> </gmd:status> <gmd:pointOfContact> <gmd:CI_ResponsibleParty> <!-- ECS expects ArchiveCenter to be here --> <gmd:organisationName> <gco:CharacterString>NSIDC DAAC &gt; NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo xlink:href=\"#NSIDC_DAAC_CONTACT_ID\"/> <gmd:role> <gmd:CI_RoleCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"distributor\">distributor</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:pointOfContact> <gmd:resourceFormat> <gmd:MD_Format> <gmd:name> <gco:CharacterString>HDF</gco:CharacterString> </gmd:name> <gmd:version> <gco:CharacterString>5</gco:CharacterString> </gmd:version> </gmd:MD_Format> </gmd:resourceFormat> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>EARTH SCIENCE &gt; SPECTRAL/ENGINEERING &gt; LIDAR &gt; LIDAR BACKSCATTER &gt; NONE &gt; NONE &gt; NONE</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode\" codeListValue=\"theme\">theme</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Science Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty id=\"GCMD_USO_ID\"> <gmd:organisationName> <gco:CharacterString>NASA Global Change Master Directory (GCMD) User Support Office</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo> <gmd:CI_Contact> <gmd:phone gco:nilReason=\"missing\"/> <gmd:address> <gmd:CI_Address> <gmd:deliveryPoint> <gco:CharacterString>NASA Global Change Master Directory, Goddard Space Flight Center</gco:CharacterString> </gmd:deliveryPoint> <gmd:city> <gco:CharacterString>Greenbelt</gco:CharacterString> </gmd:city> <gmd:administrativeArea> <gco:CharacterString>MD</gco:CharacterString> </gmd:administrativeArea> <gmd:postalCode> <gco:CharacterString>20771</gco:CharacterString> </gmd:postalCode> <gmd:country> <gco:CharacterString>USA</gco:CharacterString> </gmd:country> <gmd:electronicMailAddress> <gco:CharacterString>gcmduso@gcmd.gsfc.nasa.gov</gco:CharacterString> </gmd:electronicMailAddress> </gmd:CI_Address> </gmd:address> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://gcmd.nasa.gov/</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:applicationProfile> <gco:CharacterString>web browser</gco:CharacterString> </gmd:applicationProfile> <gmd:name> <gco:CharacterString>NASA Global Change Master Directory (GCMD)</gco:CharacterString> </gmd:name> <gmd:description> <gco:CharacterString>Home Page</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode\" codeListValue=\"information\">information</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onlineResource> <gmd:contactInstructions> <gco:CharacterString>http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso</gco:CharacterString> </gmd:contactInstructions> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role> <gmd:CI_RoleCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"custodian\">custodian</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> <gmd:citedResponsibleParty> <gmd:CI_ResponsibleParty id=\"GCMD_KEYWORDS_ID\"> <gmd:organisationName> <gco:CharacterString>Global Change Master Directory (GCMD)</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo> <gmd:CI_Contact> <gmd:phone gco:nilReason=\"missing\"/> <gmd:address> <gmd:CI_Address> <gmd:deliveryPoint> <gco:CharacterString>NASA Global Change Master Directory, Goddard Space Flight Center</gco:CharacterString> </gmd:deliveryPoint> <gmd:city> <gco:CharacterString>Greenbelt</gco:CharacterString> </gmd:city> <gmd:administrativeArea> <gco:CharacterString>MD</gco:CharacterString> </gmd:administrativeArea> <gmd:postalCode> <gco:CharacterString>20771</gco:CharacterString> </gmd:postalCode> <gmd:country> <gco:CharacterString>USA</gco:CharacterString> </gmd:country> <gmd:electronicMailAddress> <gco:CharacterString>gcmduso@gcmd.gsfc.nasa.gov</gco:CharacterString> </gmd:electronicMailAddress> </gmd:CI_Address> </gmd:address> <gmd:onlineResource> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://gcmd.nasa.gov/Resources/valids/</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:applicationProfile> <gco:CharacterString>web browser</gco:CharacterString> </gmd:applicationProfile> <gmd:name> <gco:CharacterString>NASA Global Change Master Directory (GCMD) Keyword Page</gco:CharacterString> </gmd:name> <gmd:description> <gco:CharacterString>This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode\" codeListValue=\"download\">download</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onlineResource> <gmd:contactInstructions> <gco:CharacterString>http://gcmd.nasa.gov/MailComments/MailComments.jsf?rcpt=gcmduso</gco:CharacterString> </gmd:contactInstructions> </gmd:CI_Contact> </gmd:contactInfo> <gmd:role> <gmd:CI_RoleCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"custodian\">custodian</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:citedResponsibleParty> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>GEOGRAPHIC REGION &gt; GLOBAL</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode\" codeListValue=\"place\">place</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Location Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_USO_ID\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_KEYWORDS_ID\"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>NASA/NSIDC_DAAC &gt; NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode\" codeListValue=\"dataCenter\">dataCenter</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Data Center Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_USO_ID\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_KEYWORDS_ID\"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>Earth Observation Satellites &gt; NASA Decadal Survey &gt; ICESAT-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode\" codeListValue=\"platform\">platform</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Platform Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_USO_ID\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_KEYWORDS_ID\"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:descriptiveKeywords> <gmd:MD_Keywords> <gmd:keyword> <gco:CharacterString>Earth Remote Sensing Instruments &gt; Active Remote Sensing &gt; Altimeters &gt; Lidar/Laser Altimeters &gt; ATLAS &gt; Advanced Topographic Laser Altimeter System</gco:CharacterString> </gmd:keyword> <gmd:type> <gmd:MD_KeywordTypeCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode\" codeListValue=\"instrument\">instrument</gmd:MD_KeywordTypeCode> </gmd:type> <gmd:thesaurusName> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>NASA/GCMD Instrument Keywords</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_USO_ID\"/> <gmd:citedResponsibleParty xlink:href=\"#GCMD_KEYWORDS_ID\"/> </gmd:CI_Citation> </gmd:thesaurusName> </gmd:MD_Keywords> </gmd:descriptiveKeywords> <gmd:resourceConstraints> <gmd:MD_Constraints> <gmd:useLimitation> <gco:CharacterString>Cite these data in publications as follows: The data used in this study were produced by the ICESat-2 Science Project Office at NASA/GSFC. The data archive site is the NASA National Snow and Ice Data Center Distributed Active Archive Center.</gco:CharacterString> </gmd:useLimitation> </gmd:MD_Constraints> </gmd:resourceConstraints> <gmd:language> <gco:CharacterString>eng</gco:CharacterString> </gmd:language> <gmd:topicCategory> <gmd:MD_TopicCategoryCode>geoscientificInformation</gmd:MD_TopicCategoryCode> </gmd:topicCategory> <gmd:extent> <gmd:EX_Extent> <gmd:geographicElement> <gmd:EX_GeographicBoundingBox> <!-- ECS extracts WestBoundingCoordinate from here --> <gmd:westBoundLongitude> <gco:Decimal>-180.0</gco:Decimal> </gmd:westBoundLongitude> <!-- ECS extracts EastBoundingCoordinate from here --> <gmd:eastBoundLongitude> <gco:Decimal>180.0</gco:Decimal> </gmd:eastBoundLongitude> <!-- ECS extracts SouthBoundingCoordinate from here --> <gmd:southBoundLatitude> <gco:Decimal>-90.0</gco:Decimal> </gmd:southBoundLatitude> <!-- ECS extracts NorthBoundingCoordinate from here --> <gmd:northBoundLatitude> <gco:Decimal>90.0</gco:Decimal> </gmd:northBoundLatitude> </gmd:EX_GeographicBoundingBox> </gmd:geographicElement> <gmd:temporalElement> <gmd:EX_TemporalExtent> <gmd:extent> <gml:TimePeriod gml:id=\"TimePeriod_ID_1\"> <!-- ECS extracts RangeBeginningDate and RangeBeginningTime from here --> <gml:beginPosition>2005-01-01T00:00:00Z</gml:beginPosition> <!-- ECS extracts RangeEndingDate and RangeEndingTime from here --> <gml:endPosition>2020-12-31T23:59:59Z</gml:endPosition> </gml:TimePeriod> </gmd:extent> </gmd:EX_TemporalExtent> </gmd:temporalElement> </gmd:EX_Extent> </gmd:extent> <gmd:processingLevel> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>2A</gco:CharacterString> </gmd:code> <gmd:description gco:nilReason=\"missing\"/> </gmd:MD_Identifier> </gmd:processingLevel> </gmd:MD_DataIdentification> </gmd:identificationInfo> <gmd:contentInfo> <gmd:MD_ImageDescription> <gmd:attributeDescription gco:nilReason=\"missing\"/> <gmd:contentType gco:nilReason=\"missing\"/> <gmd:processingLevelCode> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>2A</gco:CharacterString> </gmd:code> <gmd:description gco:nilReason=\"missing\"/> </gmd:MD_Identifier> </gmd:processingLevelCode> </gmd:MD_ImageDescription> </gmd:contentInfo> <gmd:distributionInfo> <gmd:MD_Distribution> <gmd:distributionFormat> <gmd:MD_Format> <gmd:name> <gco:CharacterString>HDF</gco:CharacterString> </gmd:name> <gmd:version> <gco:CharacterString>5</gco:CharacterString> </gmd:version> </gmd:MD_Format> </gmd:distributionFormat> <gmd:distributor> <gmd:MD_Distributor> <gmd:distributorContact> <gmd:CI_ResponsibleParty> <gmd:organisationName> <gco:CharacterString>NSIDC DAAC &gt; NASA National Snow and Ice Data Center Distributed Active Archive Center</gco:CharacterString> </gmd:organisationName> <gmd:contactInfo xlink:href=\"#NSIDC_DAAC_CONTACT_ID\"/> <gmd:role> <gmd:CI_RoleCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_RoleCode\" codeListValue=\"distributor\">distributor</gmd:CI_RoleCode> </gmd:role> </gmd:CI_ResponsibleParty> </gmd:distributorContact> <gmd:distributorTransferOptions> <gmd:MD_DigitalTransferOptions> <gmd:onLine> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://nsidc.org/data/icesat2/data.html</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:description> <gco:CharacterString>Data Product Description Page</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode\" codeListValue=\"information\">information</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onLine> <gmd:onLine> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://nsidc.org/data/icesat2/order.html</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:description> <gco:CharacterString>Data Product Order Page</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode\" codeListValue=\"order\">order</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onLine> <gmd:onLine> <gmd:CI_OnlineResource> <gmd:linkage> <gmd:URL>http://dx.doi.org/10.5067/ATLAS/ATL04.001</gmd:URL> </gmd:linkage> <gmd:protocol> <gco:CharacterString>http</gco:CharacterString> </gmd:protocol> <gmd:description> <gco:CharacterString>Digital Object Identifier URL</gco:CharacterString> </gmd:description> <gmd:function> <gmd:CI_OnLineFunctionCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode\" codeListValue=\"information\">information</gmd:CI_OnLineFunctionCode> </gmd:function> </gmd:CI_OnlineResource> </gmd:onLine> </gmd:MD_DigitalTransferOptions> </gmd:distributorTransferOptions> </gmd:MD_Distributor> </gmd:distributor> </gmd:MD_Distribution> </gmd:distributionInfo> <gmi:acquisitionInformation> <gmi:MI_AcquisitionInformation> <gmi:instrument> <eos:EOS_Instrument id=\"ATLAS_INSTRUMENT_ID\"> <gmi:citation> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>ATLAS &gt; Advanced Topographic Laser Altimeter System</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> </gmd:CI_Citation> </gmi:citation> <gmi:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ATLAS</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>Advanced Topographic Laser Altimeter System</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmi:identifier> <gmi:type> <gco:CharacterString>Laser Altimeter</gco:CharacterString> </gmi:type> <gmi:description> <gco:CharacterString>ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS.</gco:CharacterString> </gmi:description> <gmi:mountedOn xlink:href=\"#ICESAT_2_PLATFORM_ID\"/> </eos:EOS_Instrument> </gmi:instrument> <gmi:operation> <!-- MI_Operation is expected to be here by the Base Reference Metadata Model document--> <gmi:MI_Operation> <gmi:description> <gco:CharacterString>ICESat-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmi:description> <gmi:citation> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>ICESat-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> </gmd:CI_Citation> </gmi:citation> <gmi:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ICESat-2</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmi:identifier> <gmi:status> <gmd:MD_ProgressCode codeList=\"http://cdn.earthdata.nasa.gov/iso/resources/Codelist/gmxCodelists.xml#MD_ProgressCode\" codeListValue=\"underDevelopment\">underDevelopment</gmd:MD_ProgressCode> </gmi:status> <gmi:parentOperation gco:nilReason=\"inapplicable\"/> <gmi:platform xlink:href=\"#ICESAT_2_PLATFORM_ID\"/> </gmi:MI_Operation> </gmi:operation> <gmi:platform> <eos:EOS_Platform id=\"ICESAT_2_PLATFORM_ID\"> <gmi:citation> <gmd:CI_Citation> <gmd:title> <gco:CharacterString>ICESat-2 &gt; Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:title> <gmd:date gco:nilReason=\"unknown\"/> </gmd:CI_Citation> </gmi:citation> <gmi:identifier> <gmd:MD_Identifier> <gmd:code> <gco:CharacterString>ICESat-2</gco:CharacterString> </gmd:code> <gmd:description> <gco:CharacterString>Ice, Cloud, and land Elevation Satellite-2</gco:CharacterString> </gmd:description> </gmd:MD_Identifier> </gmi:identifier> <gmi:description> <gco:CharacterString>Spacecraft</gco:CharacterString> </gmi:description> <gmi:instrument xlink:href=\"#ATLAS_INSTRUMENT_ID\"/> </eos:EOS_Platform> </gmi:platform> </gmi:MI_AcquisitionInformation> </gmi:acquisitionInformation> </gmi:MI_Metadata> </gmd:seriesMetadata> </gmd:DS_Series>
    • fullnamepath
      /METADATA
  • METADATA_AcquisitionInformation
    • METADATA_AcquisitionInformation_lidar
      • pulse_rate
        10000 pps
      • wavelength
        532 nm
      • identifier
        ATLAS
      • type
        Laser Altimeter
      • description
        ATLAS on ICESat-2 determines the range between the satellite and the Earth's surface by measuring the two-way time delay of short pulses of laser light that it transmits in six beams. It is different from previous operational ice-sheet altimeters in that it is a photon-counting LIDAR. ATLAS records a set of arrival times for individual photons, which are then analyzed to derive surface, vegetation, and cloud properties. ATLAS has six beams arranged in three pairs, so that it samples each of three reference pair tracks with a pair of beams; ATLAS transmits pulses at 10 kHz, giving approximately one pulse every 0.7 m along track; ATLAS's expected pointing control will be better than 90 m RMS.
      • fullnamepath
        /METADATA/AcquisitionInformation/lidar
    • METADATA_AcquisitionInformation_lidarDocument
      • edition
        Pre-Release
      • publicationDate
        12/31/17
      • title
        A document describing the ATLAS instrument will be provided by the ICESat-2 Project Science Office.
      • fullnamepath
        /METADATA/AcquisitionInformation/lidarDocument
    • METADATA_AcquisitionInformation_platform
      • identifier
        ICESat-2
      • description
        Ice, Cloud, and land Elevation Satellite-2
      • type
        Spacecraft
      • fullnamepath
        /METADATA/AcquisitionInformation/platform
    • METADATA_AcquisitionInformation_platformDocument
      • edition
        31-Dec-16
      • publicationDate
        31-Dec-16
      • title
        The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation. Thorsten Markus, Tom Neumann, Anthony Martino, Waleed Abdalati, Kelly Brunt, Beata Csatho, Sinead Farrell, Helen Fricker, Alex Gardner, David Harding, Michael Jasinski, Ron Kwok, Lori Magruder, Dan Lubin, Scott Luthcke, James Morison, Ross Nelson, Amy Neuenschwander, Stephen Palm, Sorin Popescu, CK Shum, Bob E. Schutz, Benjamin Smith, Yuekui Yang, Jay Zwally. http://dx.doi.org/10.1016/j.rse.2016.12.029
      • fullnamepath
        /METADATA/AcquisitionInformation/platformDocument
    • METADATA_DataQuality
      • scope
        NOT_SET
      • fullnamepath
        /METADATA/DataQuality
    • METADATA_DataQuality_CompletenessOmission
      • evaluationMethodType
        directInternal
      • measureDescription
        TBD
      • nameOfMeasure
        TBD
      • unitofMeasure
        TBD
      • value
        NOT_SET
      • fullnamepath
        /METADATA/DataQuality/CompletenessOmission
    • METADATA_DataQuality_DomainConsistency
      • evaluationMethodType
        directInternal
      • measureDesciption
        TBD
      • nameOfMeasure
        TBD
      • unitofMeasure
        TBD
      • value
        NOT_SET
      • fullnamepath
        /METADATA/DataQuality/DomainConsistency
    • METADATA_ProductSpecificationDocument
      • characterSet
        utf8
      • edition
        Revision C
      • language
        eng
      • publicationDate
        12/1/2017
      • ShortName
        ATL04_SDP
      • title
        ICESat-2-SIPS-SPEC-4259 - ATLAS Science Algorithm Standard Data Product (SDP) Volume 4 (ATL04). Revision C.
      • fullnamepath
        /METADATA/ProductSpecificationDocument
    • METADATA_SeriesIdentification
      • maintenanceAndUpdateFrequency
        asNeeded
      • maintenanceDate
        SET_BY_META
      • VersionID
        941
      • identifier_product_DOI
        10.5067/ATLAS/ATL04.001
      • language
        eng
      • characterSet
        utf8
      • pointOfContact
        NSIDC DAAC > NASA National Snow and Ice Data Center Distributed Active Archive Center
      • longName
        ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles
      • shortName
        ATL04
      • revisionDate
        2016-06-09
      • resourceProviderOrganizationName
        National Aeronautics and Space Administration (NASA)
      • abstract
        ATL04 contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Includes calibration coefficient values derived from data within the polar regions.
      • purpose
        The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product.
      • credit
        The software that generates the ATL04 product was designed and implemented within the ICESat-2 Science Investigator-led Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland.
      • status
        onGoing
      • format
        HDF
      • formatVersion
        5
      • topicCategory
        geoscientificInformation
      • mission
        ICESat-2 > Ice, Cloud, and land Elevation Satellite-2
      • fullnamepath
        /METADATA/SeriesIdentification
    • METADATA_DatasetIdentification
      • spatialRepresentationType
        along-track
      • creationDate
        2018-01-17T03:29:38.000000Z
      • uuid
        A67E7ACC-34AE-406F-DFF5-1CDB5944AD88
      • fileName
        ATL04_20151028T061609_00970301_941_01.h5
      • VersionID
        941
      • language
        eng
      • characterSet
        utf8
      • shortName
        ATL04
      • originatorOrganizationName
        GSFC I-SIPS > ICESat-2 Science Investigator-led Processing System
      • abstract
        ATL04 contains along-track atmosphere backscatter data at full instrument resolution. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Includes calibration coefficient values derived from data within the polar regions.
      • purpose
        The purpose of ATL04 is to provide normalized relative backscatter and ancillary meteorological and atmosphere data that will be used by to create the upstream ATL09 product.
      • credit
        The software that generates the ATL04 product was designed and implemented within the ICESat-2 Science Investigator-led Processing System at the NASA Goddard Space Flight Center in Greenbelt, Maryland.
      • status
        onGoing
      • topicCategory
        geoscientificInformation
      • fullnamepath
        /METADATA/DatasetIdentification
    • METADATA_Extent
      • northBoundLatitude
        49.782642729269220
      • eastBoundLongitude
        -162.74654264353322
      • southBoundLatitude
        -0.0012902707602664538
      • westBoundLongitude
        -170.88174733051255
      • rangeBeginningDateTime
        2015-10-28T06:16:09.207998Z
      • rangeEndingDateTime
        2015-10-28T06:29:30.248021Z
      • fullnamepath
        /METADATA/Extent
    • METADATA_QADatasetIdentification
      • abstract
        An ASCII product that contains statistical information on data product results. These statistics enable data producers and users to assess the quality of the data in the data product granule
      • creationDate
        2018-01-17T03:30:11.000000Z
      • fileName
        ATL04_20151028T061609_00970301_941_01.h5.qa
      • fullnamepath
        /METADATA/QADatasetIdentification
  • METADATA_Lineage
    • METADATA_Lineage_ANC25_04
      • description
        HDF5 template file that defines the organization and default content of the product.
      • fileName
        atl04_template.h5
      • shortName
        ANC25-04
      • uuid
        1880D7F1-7F1F-4F36-A0C0-B492BF82424F
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC25-04
    • METADATA_Lineage_Control
      • description
        Text-based keyword=value file generated automatically within the ICESat-2 data system that specifies all of the conditions required for each individual run of the software.
      • fileName
        cf_atlas_l2a_atm_0097_03_01.ctl
      • shortName
        CNTL
      • version
        1
      • fullnamepath
        /METADATA/Lineage/Control
    • METADATA_Lineage_ANC28
      • description
        DTU10 Mean Sea Surface reformatted into HDF5.
      • fileName
        dtu10_20140218_001_01.h5
      • shortName
        ANC28
      • uuid
        FB84D076-0F68-4C2B-A576-C9DF9BC79E4C
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC28
    • METADATA_Lineage_ANC38_04
      • description
        ISO 19139 XML file containing DataSet-level metadata information.
      • fileName
        DsESDTAtATL04.001.dataset.xml
      • shortName
        ANC38-04
      • uuid
        95BF65A6-F1E7-445E-9E94-ADD030917038
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC38-04
    • METADATA_Lineage_ANC06_02
      • description
        GIMP Digital Elevation Model reformatted into HDF5.
      • fileName
        gimp30m_20140609_003_01.h5
      • shortName
        ANC06-02
      • uuid
        8FB4F997-A9BC-48A3-9C3F-5248B86E45C3
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC06-02
    • METADATA_Lineage_ANC09
      • description
        IGBP surface type file
      • fileName
        gigbp2_0ll.img
      • shortName
        ANC09
      • uuid
        7E06B60C-E194-45DF-896A-9E3E6CE308C6
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC09
    • METADATA_Lineage_ANC36_04
      • description
        ISO 19139 XML file containing Series-level metadata information.
      • fileName
        DsESDTAtATL04.001.series.xml
      • shortName
        ANC36-04
      • uuid
        5BFCCB48-D68E-4897-92C6-389DE6A1C32B
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC36-04
    • METADATA_Lineage_ANC39
      • description
        Intermediate ancillary file produced by the ICESat-2 atlas_l2a_alt PGE as an input to the atlas_l2a_atm PGE.
      • fileName
        ANC39_20151028T061609_00970301_941_01.h5\000
        ANC39_20151028T062322_00970302_941_01.h5\000
      • shortName
        ANC39\000
        ANC39\000
      • uuid
        58B2D1B4-8663-4AAC-9676-33810D187B9E\000
        FE977CBB-9979-4DD1-D042-BBEE196A6845\000
      • version
        941\000
        941\000
      • start_cycle
        3
        3
      • end_cycle
        3
        3
      • start_orbit
        2871
        2871
      • end_orbit
        2871
        2871
      • start_rgt
        97
        97
      • end_rgt
        97
        97
      • start_region
        1
        2
      • end_region
        1
        2
      • start_geoseg
        1
        150475
      • end_geoseg
        150474
        332618
      • fullnamepath
        /METADATA/Lineage/ANC39
    • METADATA_Lineage_ANC26_04
      • description
        HDF5 template file that defines the organization and default content of the product metadata.
      • fileName
        atl04_metadata_template.h5
      • shortName
        ANC26-04
      • uuid
        7E3F303E-3583-4275-9471-68B8826DC492
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC26-04
    • METADATA_Lineage_ANC06_01
      • description
        GMTED Digital Elevation Model reformatted into HDF5.
      • fileName
        gmted75_20140609_003_01.h5
      • shortName
        ANC06-01
      • uuid
        7166107B-1668-43BF-9778-A59E2C34CACA
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC06-01
    • METADATA_Lineage_ANC19
      • description
        TAI to UTC leapsecond file retrieved from ftp://maia.usno.navy.mil/ser7/tai-utc.dat
      • fileName
        tai-utc.dat
      • shortName
        ANC19
      • uuid
        1B17F4A6-AE26-4FC4-862A-BF283C488602
      • version
        001
      • fullnamepath
        /METADATA/Lineage/ANC19
    • METADATA_Lineage_ANC10
      • description
        GEOS5 FPIT 2D
      • fileName
        DAS.fpit.asm.tavg1_2d_slv_Nx.GEOS591.20140225_0530.V01.nc4\000
        DAS.fpit.asm.tavg1_2d_slv_Nx.GEOS591.20140225_0630.V01.nc4\000
        DAS.fpit.asm.tavg1_2d_slv_Nx.GEOS591.20140225_0730.V01.nc4\000
      • shortName
        ANC10\000
        ANC10\000
        ANC10\000
      • uuid
        NOT_SET\000
        NOT_SET\000
        NOT_SET\000
      • version
        01\000
        01\000
        01\000
      • fullnamepath
        /METADATA/Lineage/ANC10
  • METADATA_ProcessStep
    • METADATA_ProcessStep_Browse
      • processDescription
        Browse processing is performed for each granule SIPS produces. The browse utility reads data from the granule and produces browse images as defined in the respective product ATBD. The utility then embeds each browse image into the product within the /Browse group.
      • identifier
        atlas_brw
      • softwareVersion
        Version 1.1
      • softwareDate
        Jan 13 2018
      • softwareTitle
        Creates ATLAS HDF5 browse files
      • runTimeParameters
        cf_atlas_l2a_atm_0097_03_01.ctl
      • stepDateTime
        2018-01-17T03:30:14.000000Z
      • fullnamepath
        /METADATA/ProcessStep/Browse
    • METADATA_ProcessStep_Metadata
      • processDescription
        Metadata information is processed by the metadata utility for each granule produced by SIPS. During PGE processing, dynamic metadata are written to the product. Additional static information is provided with the metadata template. The metadata utility reads ISO Dataset and Series metadata files and updates the product with static information from within those files. The utility then merges the static and dynamic metadata to creates output ISO19139 Dataset and Series XML files. Finally the utility reads the ISO19139 Dataset and Series XML files into memory and stores the textual representations as attributes attached to the /METADATA group.
      • identifier
        atlas_meta
      • softwareVersion
        Version 3.1
      • softwareDate
        Jan 13 2018
      • softwareTitle
        Creates ATLAS XML metadata files
      • runTimeParameters
        cf_atlas_l2a_atm_0097_03_01.ctl
      • stepDateTime
        2018-01-17T03:30:40.000000Z
      • fullnamepath
        /METADATA/ProcessStep/Metadata
    • METADATA_ProcessStep_PGE
      • ATBDDate
        11/15/2017
      • ATBDTitle
        ICESat-2-SIPS-SPEC-1607 - SIPs: Atmosphere Products L5 Specification Document
      • ATBDVersion
        Version 7.3
      • documentation
        ICESat-2-SIPS-SPEC-2327 - ATLAS Science Algorithm Software Design Description (SDD) Volume 8 (atlas_l2a_atm). Revision C.
      • documentDate
        12/1/2017
      • processDescription
        Computes Uncalibrated Backscatter Profiles determined by ATBD Algorithm using POD and PPD
      • identifier
        atlas_l2a_atm
      • softwareVersion
        Version 3.1
      • softwareDate
        Jan 13 2018
      • softwareTitle
        ASAS L2A ATM PGE
      • runTimeParameters
        cf_atlas_l2a_atm_0097_03_01.ctl
      • stepDateTime
        2018-01-17T03:29:38.000000Z
      • fullnamepath
        /METADATA/ProcessStep/PGE
    • METADATA_ProcessStep_QA
      • processDescription
        QA processing is performed by an external utility on each granule produced by SIPS. The utility reads the granule, performs both generic and product-specific quality-assessment calculations, and writes a text-based quality assessment report. The name and creation data of this report are identified within the QADatasetIdentification metadata
      • identifier
        atl04_qa_util
      • softwareVersion
        Version 3.1
      • softwareDate
        Jan 13 2018
      • softwareTitle
        ATL04 QA Utility
      • runTimeParameters
        cf_atlas_l2a_atm_0097_03_01.ctl
      • stepDateTime
        2018-01-17T03:30:11.000000Z
      • fullnamepath
        /METADATA/ProcessStep/QA
    • profile_1
      • Description
        Each group contains the segments for the strong beam of one Pair Track. As ICESat-2 orbits the earth, sequential transmit pulses illuminate six ground tracks on the surface of the earth. The track width is approximately 14m. The Atmosphere profiles are only reported for the strong beam. Profiles are numbered from the left to the right in the direction of spacecraft travel as: 1 for the left-most pair of beams; 2 for the center pair of beams; and 3 for the right-most pair of beams.
      • data_rate
        Data in this group is stored at a 25hz (25 per second) rate.
      • atlas_pce
        pce3
      • atlas_beam_type
        strong
      • groundtrack_id
        gt1r
      • atmosphere_profile
        profile_1
      • atlas_spot_number
        5
      • sc_orientation
        Forward
      • fullnamepath
        /profile_1
    • profile_1_bckgrd_atlas
      • Description
        Contains the ATLAS 50-shot background data and derivations.
      • fullnamepath
        /profile_1/bckgrd_atlas
    • profile_1_calibration
      • Description
        Contains calibration data associated with a PCE strong beam.
      • data_rate
        Data within this group stored at a low rate corresponding to the number of times ATLAS passes with the calibration boundary conditions (lat > 60 and solar_angle > 90)/
      • fullnamepath
        /profile_1/calibration
    • profile_3
      • Description
        Each group contains the segments for the strong beam of one Pair Track. As ICESat-2 orbits the earth, sequential transmit pulses illuminate six ground tracks on the surface of the earth. The track width is approximately 14m. The Atmosphere profiles are only reported for the strong beam. Profiles are numbered from the left to the right in the direction of spacecraft travel as: 1 for the left-most pair of beams; 2 for the center pair of beams; and 3 for the right-most pair of beams.
      • data_rate
        Data in this group is stored at a 25hz (25 per second) rate.
      • atlas_pce
        pce1
      • atlas_beam_type
        strong
      • groundtrack_id
        gt3r
      • atmosphere_profile
        profile_3
      • atlas_spot_number
        1
      • sc_orientation
        Forward
      • fullnamepath
        /profile_3
    • profile_3_bckgrd_atlas
      • Description
        Contains the ATLAS 50-shot background data and derivations.
      • fullnamepath
        /profile_3/bckgrd_atlas
    • profile_3_calibration
      • Description
        Contains calibration data associated with a PCE strong beam.
      • data_rate
        Data within this group stored at a low rate corresponding to the number of times ATLAS passes with the calibration boundary conditions (lat > 60 and solar_angle > 90)/
      • fullnamepath
        /profile_3/calibration
    • quality_assessment
      • Description
        Contains quality assessment data. This may include QA counters, QA along-track data and/or QA summary data.
      • fullnamepath
        /quality_assessment
    • meteorology_molec_bkscat
      • Description
        Contains sampled GEOS5_FPIT meteorological model data and molecular backscatter. This data is created from the time/locations of the center profile.
      • data_rate
        Data in this group is stored at a 1hz (1 per second) rate.
      • fullnamepath
        /meteorology_molec_bkscat
    • profile_2
      • Description
        Each group contains the segments for the strong beam of one Pair Track. As ICESat-2 orbits the earth, sequential transmit pulses illuminate six ground tracks on the surface of the earth. The track width is approximately 14m. The Atmosphere profiles are only reported for the strong beam. Profiles are numbered from the left to the right in the direction of spacecraft travel as: 1 for the left-most pair of beams; 2 for the center pair of beams; and 3 for the right-most pair of beams.
      • data_rate
        Data in this group is stored at a 25hz (25 per second) rate.
      • atlas_pce
        pce2
      • atlas_beam_type
        strong
      • groundtrack_id
        gt2r
      • atmosphere_profile
        profile_2
      • atlas_spot_number
        3
      • sc_orientation
        Forward
      • fullnamepath
        /profile_2
    • profile_2_bckgrd_atlas
      • Description
        Contains the ATLAS 50-shot background data and derivations.
      • fullnamepath
        /profile_2/bckgrd_atlas
    • profile_2_calibration
      • Description
        Contains calibration data associated with a PCE strong beam.
      • data_rate
        Data within this group stored at a low rate corresponding to the number of times ATLAS passes with the calibration boundary conditions (lat > 60 and solar_angle > 90)/
      • fullnamepath
        /profile_2/calibration
    • ancillary_data
      • Description
        Contains information ancillary to the data product. This may include product characteristics, instrument characteristics and/or processing constants.
      • data_rate
        Data within this group pertain to the granule in its entirety.
      • fullnamepath
        /ancillary_data
    • ancillary_data_atmosphere
      • Description
        Contains general ancillary parameters.
      • data_rate
        Data within this group pertain to the granule in its entirety.
      • fullnamepath
        /ancillary_data/atmosphere
    • DODS_EXTRA
      • Unlimited_Dimension
        meteorology_molec_bkscat_delta_time
        orbit_info_delta_time
        orbit_info_sc_orient_time
        profile_1_bckgrd_atlas_delta_time
        profile_1_calibration_delta_time
        profile_1_delta_time
        profile_2_bckgrd_atlas_delta_time
        profile_2_calibration_delta_time
        profile_2_delta_time
        profile_3_bckgrd_atlas_delta_time
        profile_3_calibration_delta_time
        profile_3_delta_time


    Variables
    orbit_info_cycle_number [orbit_info_delta_time=0..0] (Type is Int16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Cycle Number
      • description
        A count of the number of exact repeats of this reference orbit.
      • source
        Operations
      • coordinates
        delta_time
      • valid_min
        0
      • valid_max
        50
      • origname
        cycle_number
      • fullnamepath
        /orbit_info/cycle_number
    orbit_info_orbit_number [orbit_info_delta_time=0..0] (Type is UInt16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Orbit Number
      • description
        Unique identifying number for each planned ICESat-2 orbit.
      • source
        Operations
      • coordinates
        delta_time
      • valid_min
        1
      • valid_max
        65000
      • origname
        orbit_number
      • fullnamepath
        /orbit_info/orbit_number
    orbit_info_sc_orient [orbit_info_sc_orient_time=0..0] (Type is Int16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Spacecraft Orientation
      • description
        This parameter tracks the spacecraft orientation between between forward, backward and transitional flight modes. ICESat-2 is considered to be flying forward when the weak beams are leading the strong beams; and backward when the strong beams are leading the weak beams. ICESat-2 is considered to be in transition while it is maneuvering between the two orientations. Science quality is potentially degraded while in transition mode.
      • source
        POD/PPD
      • coordinates
        sc_orient_time
      • flag_meanings
        backward forward transition
      • flag_values
        0
        1
        2
      • valid_min
        0
      • valid_max
        2
      • origname
        sc_orient
      • fullnamepath
        /orbit_info/sc_orient
    orbit_info_rgt [orbit_info_delta_time=0..0] (Type is Int16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Reference Ground track
      • description
        The reference ground track (RGT) is the track on the earth at which a specified unit vector within the observatory is pointed. Under nominal operating conditions, there will be no data collected along the RGT, as the RGT is spanned by GT3 and GT4. During slews or off-pointing, it is possible that ground tracks may intersect the RGT. The ICESat-2 mission has 1387 RGTs.
      • source
        Operations
      • coordinates
        delta_time
      • valid_min
        1
      • valid_max
        1387
      • origname
        rgt
      • fullnamepath
        /orbit_info/rgt
    profile_1_backg_signal_max2 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background signal max 2
      • description
        Background signal max2, in photons/bin, from the selectd method used. (Sm2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_signal_max2
      • fullnamepath
        /profile_1/backg_signal_max2
    profile_1_sig_count_med [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signal Heights - Medium
      • description
        Count of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_med
      • fullnamepath
        /profile_1/sig_count_med
    profile_1_backg_std_dev1 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background standard deviation 1
      • description
        Background standard deviation from the selected method used (Sstd1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_std_dev1
      • fullnamepath
        /profile_1/backg_std_dev1
    profile_1_dem_flag [profile_1_delta_time=0..20026] (Type is Int16)
    • attributes
      • _FillValue
        127
      • units
        1
      • contentType
        referenceInformation
      • long_name
        DEM Source Flag
      • description
        Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • flag_meanings
        none gimp gmted mss
      • flag_values
        0
        1
        2
        3
      • valid_min
        0
      • valid_max
        3
      • origname
        dem_flag
      • fullnamepath
        /profile_1/dem_flag
    profile_1_backg_max_bin1 [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background max bin 1
      • description
        Background maximum bin from the selected method used. (Binmax1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_max_bin1
      • fullnamepath
        /profile_1/backg_max_bin1
    profile_1_bckgrd_atlas_bckgrd_counts_reduced [profile_1_bckgrd_atlas_delta_time=0..160207] (Type is Int32)
    • attributes
      • units
        counts
      • long_name
        ATLAS 50-shot background count - reduced
      • description
        Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • contentType
        modelResult
      • origname
        bckgrd_counts_reduced
      • fullnamepath
        /profile_1/bckgrd_atlas/bckgrd_counts_reduced
    profile_1_bckgrd_atlas_bckgrd_counts [profile_1_bckgrd_atlas_delta_time=0..160207] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        ATLAS 50-shot background count
      • description
        Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_counts
      • fullnamepath
        /profile_1/bckgrd_atlas/bckgrd_counts
    profile_1_bckgrd_atlas_bckgrd_hist_top [profile_1_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Top of the altimetric range window
      • description
        The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_hist_top
      • fullnamepath
        /profile_1/bckgrd_atlas/bckgrd_hist_top
    profile_1_bckgrd_atlas_bckgrd_int_height [profile_1_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Altimetric range window width
      • description
        The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_int_height
      • fullnamepath
        /profile_1/bckgrd_atlas/bckgrd_int_height
    profile_1_bckgrd_atlas_bckgrd_int_height_reduced [profile_1_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Altimetric range window height - reduced
      • description
        The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_int_height_reduced
      • fullnamepath
        /profile_1/bckgrd_atlas/bckgrd_int_height_reduced
    profile_1_bckgrd_atlas_bckgrd_rate [profile_1_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        counts / second
      • contentType
        modelResult
      • long_name
        Background count rate based on the ATLAS 50-shot sum
      • description
        The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_rate
      • fullnamepath
        /profile_1/bckgrd_atlas/bckgrd_rate
    profile_1_bckgrd_atlas_pce_mframe_cnt [profile_1_bckgrd_atlas_delta_time=0..160207] (Type is UInt32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        PCE Major frame counter
      • description
        Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
      • source
        ATL02
      • coordinates
        delta_time
      • origname
        pce_mframe_cnt
      • fullnamepath
        /profile_1/bckgrd_atlas/pce_mframe_cnt
    profile_1_sig_count_low [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signal Heights - Low
      • description
        Count of low-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_low
      • fullnamepath
        /profile_1/sig_count_low
    profile_1_backg_method1 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background method 1
      • description
        Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method1
      • fullnamepath
        /profile_1/backg_method1
    profile_1_sig_h_sdev_hi [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        SDev of Signal Heights -High
      • description
        SDev of the heights of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_sdev_hi
      • fullnamepath
        /profile_1/sig_h_sdev_hi
    profile_1_dtime_fac1 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        dead_time_factor1
      • description
        Dead time correction factor for surface signal computed from radiometric lookup table.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dtime_fac1
      • fullnamepath
        /profile_1/dtime_fac1
    profile_1_atm_tw_top [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Atmospheric Telemetry Window Top
      • description
        The geolocated ellipsoidal height at the top of the Atmospheric range window
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        atm_tw_top
      • fullnamepath
        /profile_1/atm_tw_top
    profile_1_sig_h_mean_hi [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • contentType
        referenceInformation
      • long_name
        Mean of SignalHeights - High
      • description
        Mean height of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • _FillValue
        3.402823466e+38
      • units
        meters
      • origname
        sig_h_mean_hi
      • fullnamepath
        /profile_1/sig_h_mean_hi
    profile_1_beam_azimuth [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        beam azimuth
      • description
        Beam azimuth
      • source
        ATL03 ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        beam_azimuth
      • fullnamepath
        /profile_1/beam_azimuth
    profile_1_range_to_top [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Range
      • description
        Range from the spacecraft to the top of the atmosphere range window.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        range_to_top
      • fullnamepath
        /profile_1/range_to_top
    profile_1_solar_azimuth [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        solar azimuth
      • description
        The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        solar_azimuth
      • fullnamepath
        /profile_1/solar_azimuth
    profile_1_longitude [profile_1_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        Longitude of the ATM histogram
      • standard_name
        longitude
      • description
        Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude
      • fullnamepath
        /profile_1/longitude
    profile_1_backg_max_bin2 [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background max bin 2
      • description
        Background maximum bin2 from the selected method used. (Binmax2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_max_bin2
      • fullnamepath
        /profile_1/backg_max_bin2
    profile_1_latitude [profile_1_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        degrees_north
      • contentType
        referenceInformation
      • long_name
        Latitude of the ATM histogram
      • standard_name
        latitude
      • description
        Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • origname
        latitude
      • fullnamepath
        /profile_1/latitude
    profile_1_surf_type [profile_1_delta_time=0..20026] [ds_surf_type=0..4] (Type is Int16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Surface Type
      • description
        Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
      • source
        ATL03 ATBD, Section 4
      • coordinates
        delta_time, latitude, longitude
      • flag_meanings
        not_type is_type
      • flag_values
        0
        1
      • valid_min
        0
      • valid_max
        1
      • origname
        surf_type
      • fullnamepath
        /profile_1/surf_type
    profile_1_atm_rw_width_m [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        seconds
      • contentType
        referenceInformation
      • long_name
        Atmospheric Range Window Width
      • description
        The range, in meters, from the Atmospheric range window start to the range window stop.
      • source
        ATL02
      • coordinates
        delta_time, latitude, longitude
      • origname
        atm_rw_width_m
      • fullnamepath
        /profile_1/atm_rw_width_m
    profile_1_backg_method3 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        Background method 3
      • description
        Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method3
      • fullnamepath
        /profile_1/backg_method3
    profile_1_surf_type_igbp [profile_1_delta_time=0..20026] (Type is Int16)
    • attributes
      • units
        1
      • long_name
        IGBP Surface Type
      • description
        IGBP Surface Type
      • source
        Atmosphere ATBD, IGBP Surface Type
      • coordinates
        delta_time, latitude, longitude
      • contentType
        referenceInformation
      • origname
        surf_type_igbp
      • fullnamepath
        /profile_1/surf_type_igbp
    profile_1_sig_h_mean_med [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Mean of Signa Heightsl - Med
      • description
        Mean height of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_mean_med
      • fullnamepath
        /profile_1/sig_h_mean_med
    profile_1_backg_signal_max1 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • long_name
        Background signal max 1
      • description
        Background signal ma1x, in photons/bin, from the selectd method used. (Sm1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • contentType
        modelResult
      • origname
        backg_signal_max1
      • fullnamepath
        /profile_1/backg_signal_max1
    profile_1_dem_h [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        DEM Height
      • description
        Best available DEM (in priority of GIMP/GMTED/MSS) value at the geolocation point.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dem_h
      • fullnamepath
        /profile_1/dem_h
    profile_1_tx_pulse_energy [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        Joules
      • contentType
        referenceInformation
      • long_name
        Transmit Pulse Energy
      • description
        The average transmit pulse energy recorded by the Start Pulse Detector, split into per-beam measurements.
      • source
        ATL02 ATBD, Section 7.2
      • coordinates
        delta_time, latitude, longitude
      • origname
        tx_pulse_energy
      • fullnamepath
        /profile_1/tx_pulse_energy
    profile_1_surface_height [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        modelResult
      • long_name
        Surface height
      • description
        Height of the detected surface bin.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_height
      • fullnamepath
        /profile_1/surface_height
    profile_1_nrb_profile [profile_1_delta_time=0..20026] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB Profile
      • description
        Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)
      • source
        Atmosphere ATBD section 2.3
      • coordinates
        delta_time, latitude, longitude
      • origname
        nrb_profile
      • fullnamepath
        /profile_1/nrb_profile
    profile_1_backg_mean2 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Signal mean
      • description
        Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_mean2
      • fullnamepath
        /profile_1/backg_mean2
    profile_1_prof_dist_y [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Across Track Distance from RGT
      • description
        Across-Track distance from the reference ground track.
      • source
        ATL03g ATBD, Section 3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        prof_dist_y
      • fullnamepath
        /profile_1/prof_dist_y
    profile_1_beam_elevation [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        degrees
      • contentType
        referenceInformation
      • long_name
        beam elevation
      • description
        Beam elevation
      • source
        ATL03 ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        beam_elevation
      • fullnamepath
        /profile_1/beam_elevation
    profile_1_calibration_delta_time_end [profile_1_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        seconds since 2018-01-01
      • contentType
        modelResult
      • long_name
        Calibration interval end time
      • standard_name
        time
      • description
        Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        delta_time_end
      • fullnamepath
        /profile_1/calibration/delta_time_end
    profile_1_calibration_cal_ozone_trans [profile_1_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        Ozone transmission used
      • description
        Ozone transmission term used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_ozone_trans
      • fullnamepath
        /profile_1/calibration/cal_ozone_trans
    profile_1_calibration_cal_c_trans [profile_1_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        total transmission used
      • description
        The total transmission used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_c_trans
      • fullnamepath
        /profile_1/calibration/cal_c_trans
    profile_1_calibration_longitude [profile_1_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        modelResult
      • long_name
        Calibration interval start longitude
      • standard_name
        longitude
      • description
        Start Longitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude
      • fullnamepath
        /profile_1/calibration/longitude
    profile_1_calibration_latitude_end [profile_1_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_north
      • contentType
        modelResult
      • long_name
        Calibration interval end latitude
      • description
        Stop Latitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • origname
        latitude_end
      • fullnamepath
        /profile_1/calibration/latitude_end
    profile_1_calibration_latitude [profile_1_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_north
      • long_name
        Calibration interval start Latitude
      • standard_name
        latitude
      • description
        Start Latitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • contentType
        modelResult
      • origname
        latitude
      • fullnamepath
        /profile_1/calibration/latitude
    profile_1_calibration_cal_molec [profile_1_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        m-1 sr-1
      • contentType
        modelResult
      • long_name
        Molecular Backscatter used
      • description
        Molecular Backscatter value used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_molec
      • fullnamepath
        /profile_1/calibration/cal_molec
    profile_1_calibration_cal_c [profile_1_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        Photons*m^3 *sr / J
      • contentType
        modelResult
      • long_name
        Calculated Calibration constant
      • description
        Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_c
      • fullnamepath
        /profile_1/calibration/cal_c
    profile_1_calibration_cal_con [profile_1_calibration_delta_time=0..0] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        Calibration Confidence
      • description
        Calibration Confidence
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_con
      • fullnamepath
        /profile_1/calibration/cal_con
    profile_1_calibration_cal_nrb [profile_1_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB value used
      • description
        NRB value used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_nrb
      • fullnamepath
        /profile_1/calibration/cal_nrb
    profile_1_calibration_longitude_end [profile_1_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        modelResult
      • long_name
        Calibration interval end longitude
      • description
        Stop Longitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude_end
      • fullnamepath
        /profile_1/calibration/longitude_end
    profile_1_segment_id [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        along-track segment ID number.
      • description
        A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
      • source
        ATL03 ATBD, Section 3.1
      • coordinates
        delta_time, latitude, longitude
      • origname
        segment_id
      • fullnamepath
        /profile_1/segment_id
    profile_1_surface_bin [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        Surface bin
      • description
        Vertially aligned, NRB bin number of the detected surface return.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_bin
      • fullnamepath
        /profile_1/surface_bin
    profile_1_solar_elevation [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        degrees
      • contentType
        referenceInformation
      • long_name
        solar elevation
      • description
        Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        solar_elevation
      • fullnamepath
        /profile_1/solar_elevation
    profile_1_sig_count_hi [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signa Heightsl - High
      • description
        Count of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_hi
      • fullnamepath
        /profile_1/sig_count_hi
    profile_1_dtime_fac2 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        dead_time_factor2
      • description
        Dead time correction factor for surface signal computed from ATBD equation 2.1.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dtime_fac2
      • fullnamepath
        /profile_1/dtime_fac2
    profile_1_prof_dist_x [profile_1_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Along Track Distance
      • description
        Along-track distance from the equator crossing.
      • source
        ATL03g ATBD, Section 3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        prof_dist_x
      • fullnamepath
        /profile_1/prof_dist_x
    profile_1_backg_std_dev2 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background standard deviation 2
      • description
        Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_std_dev2
      • fullnamepath
        /profile_1/backg_std_dev2
    profile_1_backg_method2 [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background method 2
      • description
        Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method2
      • fullnamepath
        /profile_1/backg_method2
    profile_1_pce_mframe_cnt [profile_1_delta_time=0..20026] (Type is UInt32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        PCE Major frame counter
      • description
        Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
      • source
        ATL02
      • coordinates
        delta_time, latitude, longitude
      • origname
        pce_mframe_cnt
      • fullnamepath
        /profile_1/pce_mframe_cnt
    profile_1_sc_alt [profile_1_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        meters
      • contentType
        physicalMeasurement
      • long_name
        Altitude
      • description
        Height of the spacecraft above the WGS84 ellipsoid.
      • source
        ATL03g ATBD, Section 3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        sc_alt
      • fullnamepath
        /profile_1/sc_alt
    profile_1_sig_h_sdev_low [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        SDev of Signal Heights -Low
      • description
        SDev of the heights of low-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_sdev_low
      • fullnamepath
        /profile_1/sig_h_sdev_low
    profile_1_sig_h_mean_low [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Mean of Signal Heights - Low
      • description
        Mean height of low-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_mean_low
      • fullnamepath
        /profile_1/sig_h_mean_low
    profile_1_sig_h_sdev_med [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        SDev of Signa Heights -Med
      • description
        SDev of the heights of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_sdev_med
      • fullnamepath
        /profile_1/sig_h_sdev_med
    profile_1_nrb_bot_bin [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB Profile bottom valid bin
      • description
        The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
      • source
        Atmosphere ATBD section 2.3
      • coordinates
        delta_time, latitude, longitude
      • origname
        nrb_bot_bin
      • fullnamepath
        /profile_1/nrb_bot_bin
    profile_1_surface_sig [profile_1_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Surface signal count
      • description
        Number of photons in the detected surface bin.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_sig
      • fullnamepath
        /profile_1/surface_sig
    profile_1_nrb_top_bin [profile_1_delta_time=0..20026] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        counts
      • contentType
        modelResult
      • long_name
        NRB Profile top valid bin
      • description
        The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
      • source
        Atmosphere ATBD section 2.3
      • coordinates
        delta_time, latitude, longitude
      • origname
        nrb_top_bin
      • fullnamepath
        /profile_1/nrb_top_bin
    profile_3_backg_signal_max2 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background signal max 2
      • description
        Background signal max2, in photons/bin, from the selectd method used. (Sm2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_signal_max2
      • fullnamepath
        /profile_3/backg_signal_max2
    profile_3_sig_count_med [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signal Heights - Medium
      • description
        Count of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_med
      • fullnamepath
        /profile_3/sig_count_med
    profile_3_backg_std_dev1 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background standard deviation 1
      • description
        Background standard deviation from the selected method used (Sstd1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_std_dev1
      • fullnamepath
        /profile_3/backg_std_dev1
    profile_3_dem_flag [profile_3_delta_time=0..20026] (Type is Int16)
    • attributes
      • _FillValue
        127
      • units
        1
      • contentType
        referenceInformation
      • long_name
        DEM Source Flag
      • description
        Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • flag_meanings
        none gimp gmted mss
      • flag_values
        0
        1
        2
        3
      • valid_min
        0
      • valid_max
        3
      • origname
        dem_flag
      • fullnamepath
        /profile_3/dem_flag
    profile_3_backg_max_bin1 [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background max bin 1
      • description
        Background maximum bin from the selected method used. (Binmax1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_max_bin1
      • fullnamepath
        /profile_3/backg_max_bin1
    profile_3_bckgrd_atlas_bckgrd_counts_reduced [profile_3_bckgrd_atlas_delta_time=0..160207] (Type is Int32)
    • attributes
      • units
        counts
      • long_name
        ATLAS 50-shot background count - reduced
      • description
        Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • contentType
        modelResult
      • origname
        bckgrd_counts_reduced
      • fullnamepath
        /profile_3/bckgrd_atlas/bckgrd_counts_reduced
    profile_3_bckgrd_atlas_bckgrd_counts [profile_3_bckgrd_atlas_delta_time=0..160207] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        ATLAS 50-shot background count
      • description
        Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_counts
      • fullnamepath
        /profile_3/bckgrd_atlas/bckgrd_counts
    profile_3_bckgrd_atlas_bckgrd_hist_top [profile_3_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Top of the altimetric range window
      • description
        The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_hist_top
      • fullnamepath
        /profile_3/bckgrd_atlas/bckgrd_hist_top
    profile_3_bckgrd_atlas_bckgrd_int_height [profile_3_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Altimetric range window width
      • description
        The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_int_height
      • fullnamepath
        /profile_3/bckgrd_atlas/bckgrd_int_height
    profile_3_bckgrd_atlas_bckgrd_int_height_reduced [profile_3_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Altimetric range window height - reduced
      • description
        The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_int_height_reduced
      • fullnamepath
        /profile_3/bckgrd_atlas/bckgrd_int_height_reduced
    profile_3_bckgrd_atlas_bckgrd_rate [profile_3_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        counts / second
      • contentType
        modelResult
      • long_name
        Background count rate based on the ATLAS 50-shot sum
      • description
        The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_rate
      • fullnamepath
        /profile_3/bckgrd_atlas/bckgrd_rate
    profile_3_bckgrd_atlas_pce_mframe_cnt [profile_3_bckgrd_atlas_delta_time=0..160207] (Type is UInt32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        PCE Major frame counter
      • description
        Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
      • source
        ATL02
      • coordinates
        delta_time
      • origname
        pce_mframe_cnt
      • fullnamepath
        /profile_3/bckgrd_atlas/pce_mframe_cnt
    profile_3_sig_count_low [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signal Heights - Low
      • description
        Count of low-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_low
      • fullnamepath
        /profile_3/sig_count_low
    profile_3_backg_method1 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background method 1
      • description
        Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method1
      • fullnamepath
        /profile_3/backg_method1
    profile_3_sig_h_sdev_hi [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        SDev of Signal Heights -High
      • description
        SDev of the heights of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_sdev_hi
      • fullnamepath
        /profile_3/sig_h_sdev_hi
    profile_3_dtime_fac1 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        dead_time_factor1
      • description
        Dead time correction factor for surface signal computed from radiometric lookup table.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dtime_fac1
      • fullnamepath
        /profile_3/dtime_fac1
    profile_3_atm_tw_top [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Atmospheric Telemetry Window Top
      • description
        The geolocated ellipsoidal height at the top of the Atmospheric range window
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        atm_tw_top
      • fullnamepath
        /profile_3/atm_tw_top
    profile_3_sig_h_mean_hi [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • contentType
        referenceInformation
      • long_name
        Mean of SignalHeights - High
      • description
        Mean height of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • _FillValue
        3.402823466e+38
      • units
        meters
      • origname
        sig_h_mean_hi
      • fullnamepath
        /profile_3/sig_h_mean_hi
    profile_3_beam_azimuth [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        beam azimuth
      • description
        Beam azimuth
      • source
        ATL03 ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        beam_azimuth
      • fullnamepath
        /profile_3/beam_azimuth
    profile_3_range_to_top [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Range
      • description
        Range from the spacecraft to the top of the atmosphere range window.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        range_to_top
      • fullnamepath
        /profile_3/range_to_top
    profile_3_solar_azimuth [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        solar azimuth
      • description
        The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        solar_azimuth
      • fullnamepath
        /profile_3/solar_azimuth
    profile_3_longitude [profile_3_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        Longitude of the ATM histogram
      • standard_name
        longitude
      • description
        Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude
      • fullnamepath
        /profile_3/longitude
    profile_3_backg_max_bin2 [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background max bin 2
      • description
        Background maximum bin2 from the selected method used. (Binmax2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_max_bin2
      • fullnamepath
        /profile_3/backg_max_bin2
    profile_3_latitude [profile_3_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        degrees_north
      • contentType
        referenceInformation
      • long_name
        Latitude of the ATM histogram
      • standard_name
        latitude
      • description
        Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • origname
        latitude
      • fullnamepath
        /profile_3/latitude
    profile_3_surf_type [profile_3_delta_time=0..20026] [ds_surf_type=0..4] (Type is Int16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Surface Type
      • description
        Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
      • source
        ATL03 ATBD, Section 4
      • coordinates
        delta_time, latitude, longitude
      • flag_meanings
        not_type is_type
      • flag_values
        0
        1
      • valid_min
        0
      • valid_max
        1
      • origname
        surf_type
      • fullnamepath
        /profile_3/surf_type
    profile_3_atm_rw_width_m [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        seconds
      • contentType
        referenceInformation
      • long_name
        Atmospheric Range Window Width
      • description
        The range, in meters, from the Atmospheric range window start to the range window stop.
      • source
        ATL02
      • coordinates
        delta_time, latitude, longitude
      • origname
        atm_rw_width_m
      • fullnamepath
        /profile_3/atm_rw_width_m
    profile_3_backg_method3 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        Background method 3
      • description
        Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method3
      • fullnamepath
        /profile_3/backg_method3
    profile_3_surf_type_igbp [profile_3_delta_time=0..20026] (Type is Int16)
    • attributes
      • units
        1
      • long_name
        IGBP Surface Type
      • description
        IGBP Surface Type
      • source
        Atmosphere ATBD, IGBP Surface Type
      • coordinates
        delta_time, latitude, longitude
      • contentType
        referenceInformation
      • origname
        surf_type_igbp
      • fullnamepath
        /profile_3/surf_type_igbp
    profile_3_sig_h_mean_med [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Mean of Signa Heightsl - Med
      • description
        Mean height of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_mean_med
      • fullnamepath
        /profile_3/sig_h_mean_med
    profile_3_backg_signal_max1 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • long_name
        Background signal max 1
      • description
        Background signal ma1x, in photons/bin, from the selectd method used. (Sm1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • contentType
        modelResult
      • origname
        backg_signal_max1
      • fullnamepath
        /profile_3/backg_signal_max1
    profile_3_dem_h [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        DEM Height
      • description
        Best available DEM (in priority of GIMP/GMTED/MSS) value at the geolocation point.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dem_h
      • fullnamepath
        /profile_3/dem_h
    profile_3_tx_pulse_energy [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        Joules
      • contentType
        referenceInformation
      • long_name
        Transmit Pulse Energy
      • description
        The average transmit pulse energy recorded by the Start Pulse Detector, split into per-beam measurements.
      • source
        ATL02 ATBD, Section 7.2
      • coordinates
        delta_time, latitude, longitude
      • origname
        tx_pulse_energy
      • fullnamepath
        /profile_3/tx_pulse_energy
    profile_3_surface_height [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        modelResult
      • long_name
        Surface height
      • description
        Height of the detected surface bin.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_height
      • fullnamepath
        /profile_3/surface_height
    profile_3_nrb_profile [profile_3_delta_time=0..20026] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB Profile
      • description
        Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)
      • source
        Atmosphere ATBD section 2.3
      • coordinates
        delta_time, latitude, longitude
      • origname
        nrb_profile
      • fullnamepath
        /profile_3/nrb_profile
    profile_3_backg_mean2 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Signal mean
      • description
        Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_mean2
      • fullnamepath
        /profile_3/backg_mean2
    profile_3_prof_dist_y [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Across Track Distance from RGT
      • description
        Across-Track distance from the reference ground track.
      • source
        ATL03g ATBD, Section 3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        prof_dist_y
      • fullnamepath
        /profile_3/prof_dist_y
    profile_3_beam_elevation [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        degrees
      • contentType
        referenceInformation
      • long_name
        beam elevation
      • description
        Beam elevation
      • source
        ATL03 ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        beam_elevation
      • fullnamepath
        /profile_3/beam_elevation
    profile_3_calibration_delta_time_end [profile_3_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        seconds since 2018-01-01
      • contentType
        modelResult
      • long_name
        Calibration interval end time
      • standard_name
        time
      • description
        Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        delta_time_end
      • fullnamepath
        /profile_3/calibration/delta_time_end
    profile_3_calibration_cal_ozone_trans [profile_3_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        Ozone transmission used
      • description
        Ozone transmission term used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_ozone_trans
      • fullnamepath
        /profile_3/calibration/cal_ozone_trans
    profile_3_calibration_cal_c_trans [profile_3_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        total transmission used
      • description
        The total transmission used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_c_trans
      • fullnamepath
        /profile_3/calibration/cal_c_trans
    profile_3_calibration_longitude [profile_3_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        modelResult
      • long_name
        Calibration interval start longitude
      • standard_name
        longitude
      • description
        Start Longitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude
      • fullnamepath
        /profile_3/calibration/longitude
    profile_3_calibration_latitude_end [profile_3_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_north
      • contentType
        modelResult
      • long_name
        Calibration interval end latitude
      • description
        Stop Latitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • origname
        latitude_end
      • fullnamepath
        /profile_3/calibration/latitude_end
    profile_3_calibration_latitude [profile_3_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_north
      • long_name
        Calibration interval start Latitude
      • standard_name
        latitude
      • description
        Start Latitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • contentType
        modelResult
      • origname
        latitude
      • fullnamepath
        /profile_3/calibration/latitude
    profile_3_calibration_cal_molec [profile_3_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        m-1 sr-1
      • contentType
        modelResult
      • long_name
        Molecular Backscatter used
      • description
        Molecular Backscatter value used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_molec
      • fullnamepath
        /profile_3/calibration/cal_molec
    profile_3_calibration_cal_c [profile_3_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        Photons*m^3 *sr / J
      • contentType
        modelResult
      • long_name
        Calculated Calibration constant
      • description
        Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_c
      • fullnamepath
        /profile_3/calibration/cal_c
    profile_3_calibration_cal_con [profile_3_calibration_delta_time=0..0] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        Calibration Confidence
      • description
        Calibration Confidence
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_con
      • fullnamepath
        /profile_3/calibration/cal_con
    profile_3_calibration_cal_nrb [profile_3_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB value used
      • description
        NRB value used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_nrb
      • fullnamepath
        /profile_3/calibration/cal_nrb
    profile_3_calibration_longitude_end [profile_3_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        modelResult
      • long_name
        Calibration interval end longitude
      • description
        Stop Longitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude_end
      • fullnamepath
        /profile_3/calibration/longitude_end
    profile_3_segment_id [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        along-track segment ID number.
      • description
        A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
      • source
        ATL03 ATBD, Section 3.1
      • coordinates
        delta_time, latitude, longitude
      • origname
        segment_id
      • fullnamepath
        /profile_3/segment_id
    profile_3_surface_bin [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        Surface bin
      • description
        Vertially aligned, NRB bin number of the detected surface return.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_bin
      • fullnamepath
        /profile_3/surface_bin
    profile_3_solar_elevation [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        degrees
      • contentType
        referenceInformation
      • long_name
        solar elevation
      • description
        Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        solar_elevation
      • fullnamepath
        /profile_3/solar_elevation
    profile_3_sig_count_hi [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signa Heightsl - High
      • description
        Count of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_hi
      • fullnamepath
        /profile_3/sig_count_hi
    profile_3_dtime_fac2 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        dead_time_factor2
      • description
        Dead time correction factor for surface signal computed from ATBD equation 2.1.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dtime_fac2
      • fullnamepath
        /profile_3/dtime_fac2
    profile_3_prof_dist_x [profile_3_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Along Track Distance
      • description
        Along-track distance from the equator crossing.
      • source
        ATL03g ATBD, Section 3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        prof_dist_x
      • fullnamepath
        /profile_3/prof_dist_x
    profile_3_backg_std_dev2 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background standard deviation 2
      • description
        Background standard deviation from the selected method used (Sstd2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_std_dev2
      • fullnamepath
        /profile_3/backg_std_dev2
    profile_3_backg_method2 [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background method 2
      • description
        Background from method 2 in photons/bin. (pb2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method2
      • fullnamepath
        /profile_3/backg_method2
    profile_3_pce_mframe_cnt [profile_3_delta_time=0..20026] (Type is UInt32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        PCE Major frame counter
      • description
        Major Frame Counter - The major frame counter is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
      • source
        ATL02
      • coordinates
        delta_time, latitude, longitude
      • origname
        pce_mframe_cnt
      • fullnamepath
        /profile_3/pce_mframe_cnt
    profile_3_sc_alt [profile_3_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        meters
      • contentType
        physicalMeasurement
      • long_name
        Altitude
      • description
        Height of the spacecraft above the WGS84 ellipsoid.
      • source
        ATL03g ATBD, Section 3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        sc_alt
      • fullnamepath
        /profile_3/sc_alt
    profile_3_sig_h_sdev_low [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        SDev of Signal Heights -Low
      • description
        SDev of the heights of low-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_sdev_low
      • fullnamepath
        /profile_3/sig_h_sdev_low
    profile_3_sig_h_mean_low [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Mean of Signal Heights - Low
      • description
        Mean height of low-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_mean_low
      • fullnamepath
        /profile_3/sig_h_mean_low
    profile_3_sig_h_sdev_med [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        SDev of Signa Heights -Med
      • description
        SDev of the heights of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_sdev_med
      • fullnamepath
        /profile_3/sig_h_sdev_med
    profile_3_nrb_bot_bin [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB Profile bottom valid bin
      • description
        The ending (bottom) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
      • source
        Atmosphere ATBD section 2.3
      • coordinates
        delta_time, latitude, longitude
      • origname
        nrb_bot_bin
      • fullnamepath
        /profile_3/nrb_bot_bin
    profile_3_surface_sig [profile_3_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Surface signal count
      • description
        Number of photons in the detected surface bin.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_sig
      • fullnamepath
        /profile_3/surface_sig
    profile_3_nrb_top_bin [profile_3_delta_time=0..20026] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        counts
      • contentType
        modelResult
      • long_name
        NRB Profile top valid bin
      • description
        The starting (top) bin number within the 20 to -1 km vertically aligned profile where data are valid. Bin number starts at 1.
      • source
        Atmosphere ATBD section 2.3
      • coordinates
        delta_time, latitude, longitude
      • origname
        nrb_top_bin
      • fullnamepath
        /profile_3/nrb_top_bin
    quality_assessment_qa_granule_fail_reason [FakeDim0=0..0] (Type is Int32)
    • attributes
      • units
        1
      • contentType
        qualityInformation
      • description
        Flag indicating granule failure reason. 0=no failure; 1=processing error; 2=Insufficient output data was generated; 3=TBD Failure; 4=TBD_Failure; 5=other failure.
      • source
        Operations
      • flag_meanings
        no_failure PROCESS_ERROR INSUFFICIENT_OUTPUT failure_3 failure_4 OTHER_FAILURE
      • flag_values
        0
        1
        2
        3
        4
        5
      • valid_min
        0
      • valid_max
        5
      • long_name
        Granule Failure Reason
      • origname
        qa_granule_fail_reason
      • fullnamepath
        /quality_assessment/qa_granule_fail_reason
    quality_assessment_qa_granule_pass_fail [FakeDim0=0..0] (Type is Int32)
    • attributes
      • units
        1
      • contentType
        qualityInformation
      • description
        Flag indicating granule quality. 0=granule passes automatic QA. 1=granule fails automatic QA.
      • source
        Operations
      • flag_meanings
        PASS FAIL
      • flag_values
        0
        1
      • valid_min
        0
      • valid_max
        1
      • long_name
        Granule Pass Flag
      • origname
        qa_granule_pass_fail
      • fullnamepath
        /quality_assessment/qa_granule_pass_fail
    meteorology_molec_bkscat_met_tropt [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        K
      • contentType
        referenceInformation
      • long_name
        blended_tropopause_temperature
      • standard_name
        temperature
      • description
        Tropopause temperature (k)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_tropt
      • fullnamepath
        /meteorology_molec_bkscat/met_tropt
    meteorology_molec_bkscat_mol_backs_folded [meteorology_molec_bkscat_delta_time=0..801] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • units
        m-1 sr-1
      • contentType
        modelResult
      • long_name
        Folded molecular transmission profile
      • description
        Folded molecular transmission profile, 30 m resolution, , m-1 sr-1; 20 km to -1 km (equation 3.17)
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        mol_backs_folded
      • fullnamepath
        /meteorology_molec_bkscat/mol_backs_folded
    meteorology_molec_bkscat_ozone_trans [meteorology_molec_bkscat_delta_time=0..801] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • units
        1
      • contentType
        modelResult
      • long_name
        Ozone transmission profile
      • description
        Ozone transmission profile, 30 m resolution, 20 km to -1 km
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        ozone_trans
      • fullnamepath
        /meteorology_molec_bkscat/ozone_trans
    meteorology_molec_bkscat_molec_bkscat_p [meteorology_molec_bkscat_delta_time=0..801] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • units
        Pa
      • contentType
        modelResult
      • long_name
        Pressure profile
      • description
        Pressure profiles from 20 km to -1 km
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        molec_bkscat_p
      • fullnamepath
        /meteorology_molec_bkscat/molec_bkscat_p
    meteorology_molec_bkscat_met_t2m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        K
      • long_name
        temperature_at_2m
      • standard_name
        temperature
      • description
        Temperature at 2m above the displacement height (K)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • contentType
        referenceInformation
      • origname
        met_t2m
      • fullnamepath
        /meteorology_molec_bkscat/met_t2m
    meteorology_molec_bkscat_met_u2m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        m s-1
      • contentType
        referenceInformation
      • long_name
        Eastward_wind_at_2m
      • standard_name
        eastward_wind
      • description
        Eastward wind at 2m above the displacement height (m/s-1)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_u2m
      • fullnamepath
        /meteorology_molec_bkscat/met_u2m
    meteorology_molec_bkscat_met_u10m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        m s-1
      • contentType
        referenceInformation
      • long_name
        Eastward_wind_at_10m
      • standard_name
        eastward_wind
      • description
        Eastward wind at 10m above the displacement height (m/s-1)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_u10m
      • fullnamepath
        /meteorology_molec_bkscat/met_u10m
    meteorology_molec_bkscat_molec_trans [meteorology_molec_bkscat_delta_time=0..801] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • units
        1
      • contentType
        modelResult
      • long_name
        Molecular transmission profile
      • description
        Molecular transmission profile, 30 m resolution, 20 km to -1 km
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        molec_trans
      • fullnamepath
        /meteorology_molec_bkscat/molec_trans
    meteorology_molec_bkscat_met_cldprs [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        Pa
      • contentType
        referenceInformation
      • long_name
        cloud_top_pressure
      • standard_name
        pressure
      • description
        Pressure of the highest cloud top at this location from GEOS5 data
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_cldprs
      • fullnamepath
        /meteorology_molec_bkscat/met_cldprs
    meteorology_molec_bkscat_met_v50m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        m s-1
      • contentType
        referenceInformation
      • long_name
        northward_wind_at_50m
      • standard_name
        northward_wind
      • description
        Northward wind at 50m above the displacement height (m/s-1)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_v50m
      • fullnamepath
        /meteorology_molec_bkscat/met_v50m
    meteorology_molec_bkscat_met_v10m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        m s-1
      • contentType
        referenceInformation
      • long_name
        Northward_wind_at_10m
      • standard_name
        northward_wind
      • description
        Northward wind at 10m above the displacement height (m/s-1)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_v10m
      • fullnamepath
        /meteorology_molec_bkscat/met_v10m
    meteorology_molec_bkscat_longitude [meteorology_molec_bkscat_delta_time=0..801] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        Longitude of the ATM histogram
      • standard_name
        longitude
      • description
        Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude
      • fullnamepath
        /meteorology_molec_bkscat/longitude
    meteorology_molec_bkscat_met_ps [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        Pa
      • contentType
        referenceInformation
      • long_name
        Surface Pressure
      • standard_name
        pressure
      • description
        Surface Pressure (Pa)
      • source
        GEOS5 FPIT 3D DFPITI3NVASM
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_ps
      • fullnamepath
        /meteorology_molec_bkscat/met_ps
    meteorology_molec_bkscat_latitude [meteorology_molec_bkscat_delta_time=0..801] (Type is Float64)
    • attributes
      • units
        degrees_north
      • contentType
        referenceInformation
      • long_name
        Latitude of the ATM histogram
      • standard_name
        latitude
      • description
        Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • origname
        latitude
      • fullnamepath
        /meteorology_molec_bkscat/latitude
    meteorology_molec_bkscat_surf_type [meteorology_molec_bkscat_delta_time=0..801] [ds_surf_type=0..4] (Type is Int16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Surface Type
      • description
        Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
      • source
        ATL03 ATBD, Section 4
      • coordinates
        delta_time, latitude, longitude
      • flag_meanings
        not_type is_type
      • flag_values
        0
        1
      • valid_min
        0
      • valid_max
        1
      • origname
        surf_type
      • fullnamepath
        /meteorology_molec_bkscat/surf_type
    meteorology_molec_bkscat_met_qv10m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        kg kg-1
      • contentType
        referenceInformation
      • long_name
        specific_humidity_at_10m
      • standard_name
        specific_humidity
      • description
        Specific humidity at 10 m above the displacement height (Pa)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_qv10m
      • fullnamepath
        /meteorology_molec_bkscat/met_qv10m
    meteorology_molec_bkscat_met_tqi [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        kg m2
      • contentType
        referenceInformation
      • long_name
        cloud_ice
      • description
        Total column cloud ice (Kg/m2)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_tqi
      • fullnamepath
        /meteorology_molec_bkscat/met_tqi
    meteorology_molec_bkscat_met_t10m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        K
      • contentType
        referenceInformation
      • long_name
        temperature_at_10m
      • standard_name
        temperature
      • description
        Temperature at 10m above the displacement height (K)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_t10m
      • fullnamepath
        /meteorology_molec_bkscat/met_t10m
    meteorology_molec_bkscat_met_tql [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        kg m2
      • contentType
        referenceInformation
      • long_name
        cloud_liquid_water
      • description
        Total column cloud liquid water (kg/m2)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_tql
      • fullnamepath
        /meteorology_molec_bkscat/met_tql
    meteorology_molec_bkscat_met_v2m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        m s-1
      • contentType
        referenceInformation
      • long_name
        Northward_wind_at_2m
      • standard_name
        northward_wind
      • description
        Northward wind at 2m above the displacement height (m/s-1)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_v2m
      • fullnamepath
        /meteorology_molec_bkscat/met_v2m
    meteorology_molec_bkscat_met_ts [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        K
      • contentType
        referenceInformation
      • long_name
        surface_temperature
      • standard_name
        temperature
      • description
        Surface skin temperature (K)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_ts
      • fullnamepath
        /meteorology_molec_bkscat/met_ts
    meteorology_molec_bkscat_segment_id [meteorology_molec_bkscat_delta_time=0..801] (Type is Int32)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        along-track segment ID number.
      • description
        A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
      • source
        ATL03 ATBD, Section 3.1
      • coordinates
        delta_time, latitude, longitude
      • origname
        segment_id
      • fullnamepath
        /meteorology_molec_bkscat/segment_id
    meteorology_molec_bkscat_met_qv2m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        kg kg-1
      • contentType
        referenceInformation
      • long_name
        specific_humidity_at_2m
      • standard_name
        specific_humidity
      • description
        Specific humidity at 2 m above the displacement height (Pa)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_qv2m
      • fullnamepath
        /meteorology_molec_bkscat/met_qv2m
    meteorology_molec_bkscat_molec_bkscat_t [meteorology_molec_bkscat_delta_time=0..801] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • units
        degreesC
      • contentType
        modelResult
      • long_name
        Temperature profile
      • description
        Temperature profiles from 20 km to -1 km
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        molec_bkscat_t
      • fullnamepath
        /meteorology_molec_bkscat/molec_bkscat_t
    meteorology_molec_bkscat_met_u50m [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        m s-1
      • contentType
        referenceInformation
      • long_name
        Eastward_wind_at_50m
      • standard_name
        eastward_wind
      • description
        Eastward wind at 50m above the displacement height (m/s-1)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_u50m
      • fullnamepath
        /meteorology_molec_bkscat/met_u50m
    meteorology_molec_bkscat_met_troppb [meteorology_molec_bkscat_delta_time=0..801] (Type is Float32)
    • attributes
      • units
        Pa
      • contentType
        referenceInformation
      • long_name
        blended_tropopause_pressure
      • standard_name
        pressure
      • description
        Blended tropopause pressure (pa)
      • source
        GEOS5 FPIT 2D DFPITT1NXSLV
      • coordinates
        delta_time, latitude, longitude
      • origname
        met_troppb
      • fullnamepath
        /meteorology_molec_bkscat/met_troppb
    meteorology_molec_bkscat_mol_backscatter [meteorology_molec_bkscat_delta_time=0..801] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • units
        m-1 sr-1
      • contentType
        modelResult
      • long_name
        Molecular backscatter profile
      • description
        Molecular backscatter profile, 30 m resolution, 20 km to -1 km
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        mol_backscatter
      • fullnamepath
        /meteorology_molec_bkscat/mol_backscatter
    profile_2_backg_signal_max2 [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background signal max 2
      • description
        Background signal max2, in photons/bin, from the selectd method used. (Sm2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_signal_max2
      • fullnamepath
        /profile_2/backg_signal_max2
    profile_2_sig_count_med [profile_2_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signal Heights - Medium
      • description
        Count of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_med
      • fullnamepath
        /profile_2/sig_count_med
    profile_2_backg_std_dev1 [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background standard deviation 1
      • description
        Background standard deviation from the selected method used (Sstd1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_std_dev1
      • fullnamepath
        /profile_2/backg_std_dev1
    profile_2_dem_flag [profile_2_delta_time=0..20026] (Type is Int16)
    • attributes
      • _FillValue
        127
      • units
        1
      • contentType
        referenceInformation
      • long_name
        DEM Source Flag
      • description
        Indicates source of the DEM height. Values: 0=None, 1=GIMP, 2=GMTED, 3=MSS.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • flag_meanings
        none gimp gmted mss
      • flag_values
        0
        1
        2
        3
      • valid_min
        0
      • valid_max
        3
      • origname
        dem_flag
      • fullnamepath
        /profile_2/dem_flag
    profile_2_backg_max_bin1 [profile_2_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background max bin 1
      • description
        Background maximum bin from the selected method used. (Binmax1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_max_bin1
      • fullnamepath
        /profile_2/backg_max_bin1
    profile_2_bckgrd_atlas_bckgrd_counts_reduced [profile_2_bckgrd_atlas_delta_time=0..160207] (Type is Int32)
    • attributes
      • units
        counts
      • long_name
        ATLAS 50-shot background count - reduced
      • description
        Number of photon counts in the 50-shot sum after subtracting the number of signal photon events, defined as in ATBD Section 5, in that span.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • contentType
        modelResult
      • origname
        bckgrd_counts_reduced
      • fullnamepath
        /profile_2/bckgrd_atlas/bckgrd_counts_reduced
    profile_2_bckgrd_atlas_bckgrd_counts [profile_2_bckgrd_atlas_delta_time=0..160207] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        ATLAS 50-shot background count
      • description
        Onboard 50 shot background (200 Hz) sum of photon events within the altimetric range window.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_counts
      • fullnamepath
        /profile_2/bckgrd_atlas/bckgrd_counts
    profile_2_bckgrd_atlas_bckgrd_hist_top [profile_2_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Top of the altimetric range window
      • description
        The height of the top of the altimetric histogram, in meters above the WGS-84 ellipsoid, with all geophysical corrections applied. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_hist_top
      • fullnamepath
        /profile_2/bckgrd_atlas/bckgrd_hist_top
    profile_2_bckgrd_atlas_bckgrd_int_height [profile_2_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Altimetric range window width
      • description
        The height of the altimetric range window. This is the height over which the 50-shot sum is generated. Parameter is ingested at 50-Hz, and values are repeated to form a 200-Hz array.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_int_height
      • fullnamepath
        /profile_2/bckgrd_atlas/bckgrd_int_height
    profile_2_bckgrd_atlas_bckgrd_int_height_reduced [profile_2_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        modelResult
      • long_name
        Altimetric range window height - reduced
      • description
        The height of the altimetric range window after subtracting the height span of the signal photon events in the 50-shot span.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_int_height_reduced
      • fullnamepath
        /profile_2/bckgrd_atlas/bckgrd_int_height_reduced
    profile_2_bckgrd_atlas_bckgrd_rate [profile_2_bckgrd_atlas_delta_time=0..160207] (Type is Float32)
    • attributes
      • units
        counts / second
      • contentType
        modelResult
      • long_name
        Background count rate based on the ATLAS 50-shot sum
      • description
        The background count rate from the 50-shot altimetric histogram after removing the number of likely signal photons based on Section 5.
      • source
        ATL03 ATBD Section 7.3
      • coordinates
        delta_time
      • origname
        bckgrd_rate
      • fullnamepath
        /profile_2/bckgrd_atlas/bckgrd_rate
    profile_2_bckgrd_atlas_pce_mframe_cnt [profile_2_bckgrd_atlas_delta_time=0..160207] (Type is UInt32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        PCE Major frame counter
      • description
        Major Frame ID - The major frame ID is read from the DFC and starts counting at DFC POR. The counter is used to identify individual major frames across diag and science packets. This counter can go for about 2.7 years before rolling over. It is in the first time tag science packet. Used as part of the photon ID
      • source
        ATL02
      • coordinates
        delta_time
      • origname
        pce_mframe_cnt
      • fullnamepath
        /profile_2/bckgrd_atlas/pce_mframe_cnt
    profile_2_sig_count_low [profile_2_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        referenceInformation
      • long_name
        Count of Signal Heights - Low
      • description
        Count of low-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_count_low
      • fullnamepath
        /profile_2/sig_count_low
    profile_2_backg_method1 [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background method 1
      • description
        Background from method 1in photons/bin. (pb1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method1
      • fullnamepath
        /profile_2/backg_method1
    profile_2_sig_h_sdev_hi [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        SDev of Signal Heights -High
      • description
        SDev of the heights of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_sdev_hi
      • fullnamepath
        /profile_2/sig_h_sdev_hi
    profile_2_dtime_fac1 [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        dead_time_factor1
      • description
        Dead time correction factor for surface signal computed from radiometric lookup table.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dtime_fac1
      • fullnamepath
        /profile_2/dtime_fac1
    profile_2_atm_tw_top [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Atmospheric Telemetry Window Top
      • description
        The geolocated ellipsoidal height at the top of the Atmospheric range window
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        atm_tw_top
      • fullnamepath
        /profile_2/atm_tw_top
    profile_2_sig_h_mean_hi [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • contentType
        referenceInformation
      • long_name
        Mean of SignalHeights - High
      • description
        Mean height of high-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • _FillValue
        3.402823466e+38
      • units
        meters
      • origname
        sig_h_mean_hi
      • fullnamepath
        /profile_2/sig_h_mean_hi
    profile_2_beam_azimuth [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        beam azimuth
      • description
        Beam azimuth
      • source
        ATL03 ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        beam_azimuth
      • fullnamepath
        /profile_2/beam_azimuth
    profile_2_range_to_top [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Range
      • description
        Range from the spacecraft to the top of the atmosphere range window.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        range_to_top
      • fullnamepath
        /profile_2/range_to_top
    profile_2_solar_azimuth [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        solar azimuth
      • description
        The direction, eastwards from north, of the sun vector as seen by an observer at the laser ground spot.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        solar_azimuth
      • fullnamepath
        /profile_2/solar_azimuth
    profile_2_longitude [profile_2_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        referenceInformation
      • long_name
        Longitude of the ATM histogram
      • standard_name
        longitude
      • description
        Longitude at the the top of the ATM histogram, WGS84, East=+, derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude
      • fullnamepath
        /profile_2/longitude
    profile_2_backg_max_bin2 [profile_2_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Background max bin 2
      • description
        Background maximum bin2 from the selected method used. (Binmax2 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_max_bin2
      • fullnamepath
        /profile_2/backg_max_bin2
    profile_2_latitude [profile_2_delta_time=0..20026] (Type is Float64)
    • attributes
      • units
        degrees_north
      • contentType
        referenceInformation
      • long_name
        Latitude of the ATM histogram
      • standard_name
        latitude
      • description
        Latitude at the the top of the ATM histogram, WGS84, North=+, Derived from the geolocation of the ATM range window.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • origname
        latitude
      • fullnamepath
        /profile_2/latitude
    profile_2_surf_type [profile_2_delta_time=0..20026] [ds_surf_type=0..4] (Type is Int16)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        Surface Type
      • description
        Flags describing which surface types this interval is associated with. 0=not type, 1=is type. Order of array is land, ocean, sea ice, land ice, inland water.
      • source
        ATL03 ATBD, Section 4
      • coordinates
        delta_time, latitude, longitude
      • flag_meanings
        not_type is_type
      • flag_values
        0
        1
      • valid_min
        0
      • valid_max
        1
      • origname
        surf_type
      • fullnamepath
        /profile_2/surf_type
    profile_2_atm_rw_width_m [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        seconds
      • contentType
        referenceInformation
      • long_name
        Atmospheric Range Window Width
      • description
        The range, in meters, from the Atmospheric range window start to the range window stop.
      • source
        ATL02
      • coordinates
        delta_time, latitude, longitude
      • origname
        atm_rw_width_m
      • fullnamepath
        /profile_2/atm_rw_width_m
    profile_2_backg_method3 [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        Background method 3
      • description
        Background from method 3 in photons/bin. (Defined in Atmosphere ATBD section 3.3.4)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_method3
      • fullnamepath
        /profile_2/backg_method3
    profile_2_surf_type_igbp [profile_2_delta_time=0..20026] (Type is Int16)
    • attributes
      • units
        1
      • long_name
        IGBP Surface Type
      • description
        IGBP Surface Type
      • source
        Atmosphere ATBD, IGBP Surface Type
      • coordinates
        delta_time, latitude, longitude
      • contentType
        referenceInformation
      • origname
        surf_type_igbp
      • fullnamepath
        /profile_2/surf_type_igbp
    profile_2_sig_h_mean_med [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Mean of Signa Heightsl - Med
      • description
        Mean height of medium-confidence signal photons
      • source
        ATL03 ATBD, Section 5
      • coordinates
        delta_time, latitude, longitude
      • origname
        sig_h_mean_med
      • fullnamepath
        /profile_2/sig_h_mean_med
    profile_2_backg_signal_max1 [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • long_name
        Background signal max 1
      • description
        Background signal ma1x, in photons/bin, from the selectd method used. (Sm1 Defined in Atmosphere ATBD section 2.3.2)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • contentType
        modelResult
      • origname
        backg_signal_max1
      • fullnamepath
        /profile_2/backg_signal_max1
    profile_2_dem_h [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        DEM Height
      • description
        Best available DEM (in priority of GIMP/GMTED/MSS) value at the geolocation point.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        dem_h
      • fullnamepath
        /profile_2/dem_h
    profile_2_tx_pulse_energy [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        Joules
      • contentType
        referenceInformation
      • long_name
        Transmit Pulse Energy
      • description
        The average transmit pulse energy recorded by the Start Pulse Detector, split into per-beam measurements.
      • source
        ATL02 ATBD, Section 7.2
      • coordinates
        delta_time, latitude, longitude
      • origname
        tx_pulse_energy
      • fullnamepath
        /profile_2/tx_pulse_energy
    profile_2_surface_height [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        meters
      • contentType
        modelResult
      • long_name
        Surface height
      • description
        Height of the detected surface bin.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_height
      • fullnamepath
        /profile_2/surface_height
    profile_2_nrb_profile [profile_2_delta_time=0..20026] [ds_va_bin_h=0..699] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB Profile
      • description
        Normalize relative backscatter (NRB) profile vertically aligned to 20 to -1 km with vertical resolution of 30 m. (Photons km2/Joule)
      • source
        Atmosphere ATBD section 2.3
      • coordinates
        delta_time, latitude, longitude
      • origname
        nrb_profile
      • fullnamepath
        /profile_2/nrb_profile
    profile_2_backg_mean2 [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        counts
      • contentType
        modelResult
      • long_name
        Signal mean
      • description
        Signal mean from method 2 (pb2 defined in Atmosphere ATBD part 1 section 2.3.4)
      • source
        Atmosphere ATBD section 3.3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        backg_mean2
      • fullnamepath
        /profile_2/backg_mean2
    profile_2_prof_dist_y [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        meters
      • contentType
        referenceInformation
      • long_name
        Across Track Distance from RGT
      • description
        Across-Track distance from the reference ground track.
      • source
        ATL03g ATBD, Section 3.4
      • coordinates
        delta_time, latitude, longitude
      • origname
        prof_dist_y
      • fullnamepath
        /profile_2/prof_dist_y
    profile_2_beam_elevation [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        degrees
      • contentType
        referenceInformation
      • long_name
        beam elevation
      • description
        Beam elevation
      • source
        ATL03 ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        beam_elevation
      • fullnamepath
        /profile_2/beam_elevation
    profile_2_calibration_delta_time_end [profile_2_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        seconds since 2018-01-01
      • contentType
        modelResult
      • long_name
        Calibration interval end time
      • standard_name
        time
      • description
        Number of GPS seconds since the ATLAS SDP epoch where the cal interval ended. The corresponding start time of the interval is delta_time. The ATLAS Standard Data Products (SDP) epoch offset is defined within /ancillary_data/atlas_sdp_gps_epoch as the number of GPS seconds between the GPS epoch (1980-01-06T00:00:00.000000Z UTC) and the ATLAS SDP epoch. By adding the offset contained within atlas_sdp_gps_epoch to delta time parameters, the time in gps_seconds relative to the GPS epoch can be computed.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        delta_time_end
      • fullnamepath
        /profile_2/calibration/delta_time_end
    profile_2_calibration_cal_ozone_trans [profile_2_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        Ozone transmission used
      • description
        Ozone transmission term used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_ozone_trans
      • fullnamepath
        /profile_2/calibration/cal_ozone_trans
    profile_2_calibration_cal_c_trans [profile_2_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        total transmission used
      • description
        The total transmission used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_c_trans
      • fullnamepath
        /profile_2/calibration/cal_c_trans
    profile_2_calibration_longitude [profile_2_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        modelResult
      • long_name
        Calibration interval start longitude
      • standard_name
        longitude
      • description
        Start Longitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude
      • fullnamepath
        /profile_2/calibration/longitude
    profile_2_calibration_latitude_end [profile_2_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_north
      • contentType
        modelResult
      • long_name
        Calibration interval end latitude
      • description
        Stop Latitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • origname
        latitude_end
      • fullnamepath
        /profile_2/calibration/latitude_end
    profile_2_calibration_latitude [profile_2_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_north
      • long_name
        Calibration interval start Latitude
      • standard_name
        latitude
      • description
        Start Latitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, longitude
      • valid_min
        -90.000000000000000
      • valid_max
        90.000000000000000
      • contentType
        modelResult
      • origname
        latitude
      • fullnamepath
        /profile_2/calibration/latitude
    profile_2_calibration_cal_molec [profile_2_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        m-1 sr-1
      • contentType
        modelResult
      • long_name
        Molecular Backscatter used
      • description
        Molecular Backscatter value used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_molec
      • fullnamepath
        /profile_2/calibration/cal_molec
    profile_2_calibration_cal_c [profile_2_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        Photons*m^3 *sr / J
      • contentType
        modelResult
      • long_name
        Calculated Calibration constant
      • description
        Calculated calibration constant (one per beam, Defined by Atmosphere ATBD eqn 3.27)
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_c
      • fullnamepath
        /profile_2/calibration/cal_c
    profile_2_calibration_cal_con [profile_2_calibration_delta_time=0..0] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        Calibration Confidence
      • description
        Calibration Confidence
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_con
      • fullnamepath
        /profile_2/calibration/cal_con
    profile_2_calibration_cal_nrb [profile_2_calibration_delta_time=0..0] (Type is Float32)
    • attributes
      • _FillValue
        3.402823466e+38
      • units
        1
      • contentType
        modelResult
      • long_name
        NRB value used
      • description
        NRB value used to compute cal_const.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        cal_nrb
      • fullnamepath
        /profile_2/calibration/cal_nrb
    profile_2_calibration_longitude_end [profile_2_calibration_delta_time=0..0] (Type is Float64)
    • attributes
      • units
        degrees_east
      • contentType
        modelResult
      • long_name
        Calibration interval end longitude
      • description
        Stop Longitude of calibration interval.
      • source
        Atmosphere ATBD
      • coordinates
        delta_time, latitude, longitude
      • valid_min
        -180.00000000000000
      • valid_max
        180.00000000000000
      • origname
        longitude_end
      • fullnamepath
        /profile_2/calibration/longitude_end
    profile_2_segment_id [profile_2_delta_time=0..20026] (Type is Int32)
    • attributes
      • units
        1
      • contentType
        referenceInformation
      • long_name
        along-track segment ID number.
      • description
        A 7 digit number identifiying the along-track geolocation segment number. These are sequential, starting with 1 for the first segment after an ascending equatorial crossing node.
      • source
        ATL03 ATBD, Section 3.1
      • coordinates
        delta_time, latitude, longitude
      • origname
        segment_id
      • fullnamepath
        /profile_2/segment_id
    profile_2_surface_bin [profile_2_delta_time=0..20026] (Type is Int32)
    • attributes
      • _FillValue
        2147483647
      • units
        1
      • contentType
        modelResult
      • long_name
        Surface bin
      • description
        Vertially aligned, NRB bin number of the detected surface return.
      • source
        Atmosphere ATBD section 3.3.5
      • coordinates
        delta_time, latitude, longitude
      • origname
        surface_bin
      • fullnamepath
        /profile_2/surface_bin
    profile_2_solar_elevation [profile_2_delta_time=0..20026] (Type is Float32)
    • attributes
      • units
        degrees
      • contentType
        referenceInformation
      • long_name
        solar elevation
      • description
        Solar Angle above or below the plane tangent to the ellipsoid surface at the laser spot. Positive values mean the sun is above the horizon, while negative values mean it is below the horizon. The effect of atmospheric refraction is not included. This is a low precision value, with approximately TBD degree accuracy.
      • source
        ATL03g ATBD
      • coordinates
        delta_time, latitude, longitude
      • origname
        solar_elevation
      • fullnamepath
        /profile_2/solar_elevation
    profile_2_sig_count_hi [profile_2_delta_time=0..20026] (Type is Int32)
    • attributes