DAP4 Data Request Form (beta)ATL04_20151028T061609_00970301_941_01.h5
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dataset: ATL04_20151028T061609_00970301_941_01.h5




  • 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


    [ orbit_info_delta_time = 0..0 ] [ orbit_info_sc_orient_time = 0..0 ] [ profile_1_delta_time = 0..20026 ] [ profile_1_bckgrd_atlas_delta_time = 0..160207 ] [ ds_surf_type = 0..4 ] [ ds_va_bin_h = 0..699 ] [ profile_1_calibration_delta_time = 0..0 ] [ profile_3_delta_time = 0..20026 ] [ profile_3_bckgrd_atlas_delta_time = 0..160207 ] [ profile_3_calibration_delta_time = 0..0 ] [ FakeDim0 = 0..0 ] [ meteorology_molec_bkscat_delta_time = 0..801 ] [ profile_2_delta_time = 0..20026 ] [ profile_2_bckgrd_atlas_delta_time = 0..160207 ] [ profile_2_calibration_delta_time = 0..0 ]


    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)