DAP4 Data Request Form 19960106043137-NCEI-L3C_GHRSST-SSTskin-AVHRR_Pathfinder-PFV5.3_NOAA14_G_1996006_day-v02.0-fv01.0.nc

dataset: 19960106043137-NCEI-L3C_GHRSST-SSTskin-AVHRR_Pathfinder-PFV5.3_NOAA14_G_1996006_day-v02.0-fv01.0.nc
dmr

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Global Attributes
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      • NC_GLOBAL
        • Conventions: CF-1.6, ACDD-1.3 (Type is String)
        • title: AVHRR Pathfinder Version 5.3 L3-Collated (L3C) sea surface temperature (Type is String)
        • summary: This netCDF-4 file contains sea surface temperature (SST) data produced as part of the AVHRR Pathfinder SST Project. These data were created using Version 5.3 of the Pathfinder algorithm and the file is nearly but not completely compliant with the GHRSST Data Specifications V2.0 (GDS2). The sses_bias and sses_standard_deviation variables are empty. Full compliance with GDS2 specifications will be achieved in the future Pathfinder Version 6. These data were created by the NOAA National Centers for Environmental Information (NCEI). (Type is String)
        • references: http://pathfinder.nodc.noaa.gov and Casey, K.S., T.B. Brandon, P. Cornillon, and R. Evans: The Past, Present and Future of the AVHRR Pathfinder SST Program, in Oceanography from Space: Revisited, eds. V. Barale, J.F.R. Gower, and L. Alberotanza, Springer, 2010. DOI: 10.1007/978-90-481-8681-5_16. (Type is String)
        • institution: NCEI (Type is String)
        • history: smigen_both ifile=1996006.b4kd3-pf53ap-n14-sst.hdf ofile=1996006.i4kd3-pf53ap-n14-sst.hdf prod=sst datamin=-3.0 datamax=40.0 precision=I projection=RECT resolution=4km gap_fill=2 ; /srv/disk1t/PFV5.3CONV/bin/Converter/hdf2nc_PFV53_L3C.x -v /srv/disk1t/PFV5.3CONV/Data_PFV53/PFV53_HDF_L3C/1996/1996006.i4kd3-pf53ap-n14-sst.hdf (Type is String)
        • comment: SST from AVHRR Pathfinder (Type is String)
        • license: These data are available for use without restriction. (Type is String)
        • id: AVHRR_Pathfinder-NCEI-L3C-v5.3 (Type is String)
        • naming_authority: org.ghrsst (Type is String)
        • product_version: PFV5.3 (Type is String)
        • uuid: 072C9CC0-9CAF-4041-BBFA-7766396FA9AA (Type is String)
        • gds_version_id: 2.0 (Type is String)
        • netcdf_version_id: 4.1.2 (Type is String)
        • date_created: 20160513T015604Z (Type is String)
        • date_modified: 20160513T015604Z (Type is String)
        • date_issued: 20160301T000000Z (Type is String)
        • date_metadata_modified: 20160125T000000Z (Type is String)
        • file_quality_level: 3 (Type is Int32)
        • spatial_resolution: 0.0416667 degree (Type is String)
        • geospatial_lat_units: degrees north (Type is String)
        • geospatial_lat_resolution: 0.0416667014 (Type is Float32)
        • geospatial_lon_units: degrees east (Type is String)
        • geospatial_lon_resolution: 0.0416667014 (Type is Float32)
        • geospatial_bounds: -180.0000 -90.0000, 180.0000 90.0000 (Type is String)
        • geospatial_bounds_crs: EPSG:4326 (Type is String)
        • geospatial_lon_min: -180.000000 (Type is Float32)
        • geospatial_lon_max: 180.000000 (Type is Float32)
        • geospatial_lat_min: -90.0000000 (Type is Float32)
        • geospatial_lat_max: 90.0000000 (Type is Float32)
        • northernmost_latitude: 90.0000000 (Type is Float32)
        • southernmost_latitude: -90.0000000 (Type is Float32)
        • easternmost_longitude: 180.000000 (Type is Float32)
        • westernmost_longitude: -180.000000 (Type is Float32)
        • principal_year_day_for_collated_orbits: 1996006 (Type is String)
        • time_coverage_duration: P1D (Type is String)
        • time_coverage_resolution: P1D (Type is String)
        • start_time: 19960105T211222Z (Type is String)
        • time_coverage_start: 19960105T211222Z (Type is String)
        • stop_time: 19960107T062223Z (Type is String)
        • time_coverage_end: 19960107T062223Z (Type is String)
        • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
        • platform: NOAA-14 (Type is String)
        • instrument: AVHRR-2 (Type is String)
        • sensor: AVHRR-2 (Type is String)
        • sea_name: World-Wide Distribution (Type is String)
        • day_or_night: Day (Type is String)
        • orbit_node: Ascending (Type is String)
        • keywords: Oceans > Ocean Temperature > Sea Surface Temperature (Type is String)
        • acknowledgement: Please acknowledge the use of these data with the following statement: These data were provided by GHRSST and the NOAA National Centers for Environmental Information (NCEI). This project was supported in part by a grant from the NOAA Climate Data Record (CDR) Program for satellites. (Type is String)
        • creator_name: Kenneth S. Casey (Type is String)
        • creator_email: Kenneth.Casey@noaa.gov (Type is String)
        • creator_url: http://pathfinder.nodc.noaa.gov (Type is String)
        • creator_type: person (Type is String)
        • creator_institution: US DOC; NOAA; National Environmental Satellite Data and Information Service; National Centers for Environmental Information (Type is String)
        • contributor_name: Robert Evans (Type is String)
        • contributor_role: Principal Investigator (Type is String)
        • project: Group for High Resolution Sea Surface Temperature (Type is String)
        • publisher_name: GHRSST Project Office (Type is String)
        • publisher_email: ghrsst-po@nceo.ac.uk (Type is String)
        • publisher_url: http://www.ghrsst.org (Type is String)
        • publisher_type: group (Type is String)
        • processing_level: L3C (Type is String)
        • cdm_data_type: Grid (Type is String)
        • ncei_template_version: NCEI_NetCDF_Grid_Template_v2.0 (Type is String)
        • cdr_variable: sea_surface_temperature (Type is String)
        • keywords_vocabulary: NASA/Global Change Master Directory (GCMD) Science Keywords v8.4 (Type is String)
        • standard_name_vocabulary: Climate and Forecast (CF) Standard Name Table (Version 29, 08 July 2015) (Type is String)
        • platform_vocabulary: NASA Global Change Master Directory (GCMD) Science Keywords v8.4 (Type is String)
        • instrument_vocabulary: NASA Global Change Master Directory (GCMD) Science Keywords v8.4 (Type is String)
        • metadata_link: http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3 (Type is String)
        • program: NOAA Climate Data Record (CDR) Program for satellites (Type is String)
        • cdr_program: NOAA Climate Data Record Program for satellites (Type is String)
        • cdr_id: gov.noaa.ncdc:C00983 (Type is String)
      • DODS_EXTRA
        • Unlimited_Dimension: time (Type is String)
Global Dimensions
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      [ /time = 0..0 ]
      [ /nv = 0..1 ]
      [ /lat = 0..4319 ]
      [ /lon = 0..8639 ]
Variables
time[ /time= 0..0] (Type is Int32)
  • attributes
    • standard_name: time (Type is String)
    • long_name: reference time of SST file (Type is String)
    • units: seconds since 1981-01-01 00:00:00 (Type is String)
    • axis: T (Type is String)
    • comment: This is the reference time of the SST file. Add sst_dtime to this value to get pixel-by-pixel times. (Type is String)
    • calendar: gregorian (Type is String)
time_bounds[ /time= 0..0] [ /nv= 0..1] (Type is Int32)
  • attributes
    • long_name: time bounds (Type is String)
    • units: seconds since 1981-01-01 00:00:00 (Type is String)
    • comment: time bounds for each time value (Type is String)
    • calendar: gregorian (Type is String)
lat[ /lat= 0..4319] (Type is Float32)
  • attributes
    • standard_name: latitude (Type is String)
    • long_name: latitude (Type is String)
    • units: degrees_north (Type is String)
    • reference_datum: Geographical coordinates, WGS84 datum (Type is String)
    • axis: Y (Type is String)
    • valid_min: -90.00000000000000 (Type is Float64)
    • valid_max: 90.00000000000000 (Type is Float64)
lat_bounds[ /lat= 0..4319] [ /nv= 0..1] (Type is Float32)
  • attributes
    • long_name: latitude bounds (Type is String)
    • units: degrees_north (Type is String)
    • comment: latitude values at the north and south bounds of each grid point (Type is String)
lon[ /lon= 0..8639] (Type is Float32)
  • attributes
    • standard_name: longitude (Type is String)
    • long_name: longitude (Type is String)
    • units: degrees_east (Type is String)
    • reference_datum: Geographical coordinates, WGS84 datum (Type is String)
    • axis: X (Type is String)
    • valid_min: -180.0000000000000 (Type is Float64)
    • valid_max: 180.0000000000000 (Type is Float64)
lon_bounds[ /lon= 0..8639] [ /nv= 0..1] (Type is Float32)
  • attributes
    • long_name: longitude bounds (Type is String)
    • units: degrees_east (Type is String)
    • comment: longitude values at the west and east bounds of each grid point (Type is String)
crs(Type is Int32)
  • attributes
    • long_name: coordinate reference system (Type is String)
    • grid_mapping_name: latitude_longitude (Type is String)
    • semi_major_axis: 6378137.000000000 (Type is Float64)
    • inverse_flattening: 298.2572235630000 (Type is Float64)
    • epsg_code: EPSG:4326 (Type is String)
    • comment: This is a container variable that describes the grid_mapping used by the data in this file. This variable does not contain any data; only information about the geographic coordinate system. (Type is String)
sea_surface_temperature[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • standard_name: sea_surface_skin_temperature (Type is String)
    • long_name: NOAA Climate Data Record of sea surface skin temperature (Type is String)
    • coverage_content_type: physicalMeasurement (Type is String)
    • grid_mapping: crs (Type is String)
    • units: kelvin (Type is String)
    • add_offset: 273.1500000000000 (Type is Float64)
    • scale_factor: 0.01000000000000000 (Type is Float64)
    • valid_min: -180 (Type is Int16)
    • valid_max: 4500 (Type is Int16)
    • _FillValue: -32768 (Type is Int16)
    • ancillary_variables: quality_level pathfinder_quality_level l2p_flags (Type is String)
    • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
    • platform: NOAA-14 (Type is String)
    • comment: Skin temperature of the ocean (Type is String)
sst_dtime[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int32)
  • attributes
    • long_name: time difference from reference time (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: seconds (Type is String)
    • add_offset: 0 (Type is Int32)
    • scale_factor: 1 (Type is Int32)
    • valid_min: -2147483647 (Type is Int32)
    • valid_max: 2147483647 (Type is Int32)
    • _FillValue: -2147483648 (Type is Int32)
    • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
    • platform: NOAA-14 (Type is String)
    • comment: Time plus sst_dtime gives seconds after 1981-01-01 00:00:00. Note: in PFV5.3 this sst_dtime is empty. PFV6 will contain the correct sst_dtime values. (Type is String)
sses_bias[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • long_name: SSES bias estimate (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: kelvin (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 0.02000000000000000 (Type is Float64)
    • valid_min: -127 (Type is Int16)
    • valid_max: 127 (Type is Int16)
    • _FillValue: -128 (Type is Int16)
    • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
    • platform: NOAA-14 (Type is String)
    • comment: Bias estimate derived using the techniques described at https://www.ghrsst.org/ghrsst/tags-and-wgs/stval-wg/sses-description-of-schemes/. Note: in PFV5.3 this sses_bias is empty. PFV6 will contain the correct sses_bias values. (Type is String)
sses_standard_deviation[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • long_name: SSES standard deviation (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: kelvin (Type is String)
    • add_offset: 2.540000000000000 (Type is Float64)
    • scale_factor: 0.02000000000000000 (Type is Float64)
    • valid_min: -127 (Type is Int16)
    • valid_max: 127 (Type is Int16)
    • _FillValue: -128 (Type is Int16)
    • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
    • platform: NOAA-14 (Type is String)
    • comment: Standard deviation estimate derived using the techniques described at https://www.ghrsst.org/ghrsst/tags-and-wgs/stval-wg/sses-description-of-schemes/. Note: in PFV5.3 this sses_standard_deviation is empty. PFV6 will contain the correct sses_standard_deviation values. (Type is String)
dt_analysis[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • long_name: deviation from last SST analysis (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: kelvin (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 0.1000000000000000 (Type is Float64)
    • valid_min: -127 (Type is Int16)
    • valid_max: 127 (Type is Int16)
    • _FillValue: -128 (Type is Int16)
    • source: NOAA Daily 25km Global Optimally Interpolated Sea Surface Temperature (OISST) (Type is String)
    • platform: NOAA-14 (Type is String)
    • reference: AVHRR_OI, with inland values populated from AVHRR_Pathfinder daily climatological SST. For more information on this reference field see http://accession.nodc.noaa.gov/0071180. (Type is String)
    • comment: The difference between this SST and the previous day's SST. (Type is String)
wind_speed[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • standard_name: wind_speed (Type is String)
    • long_name: 10m wind speed (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: m s-1 (Type is String)
    • height: 10 m (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 1.000000000000000 (Type is Float64)
    • valid_min: -127 (Type is Int16)
    • valid_max: 127 (Type is Int16)
    • _FillValue: -128 (Type is Int16)
    • time_offset: 1.472200000000001 (Type is Float64)
    • source: NCEP/DOE AMIP-II Reanalysis (Reanalysis-2): u_wind.10m.gauss.1996.nc, v_wind.10m.gauss.1996.nc (Type is String)
    • comment: These wind speeds were created by NCEP-DOE Atmospheric Model Intercomparison Project (AMIP-II) reanalysis (R-2) and represent winds at 10 metres above the sea surface. (Type is String)
sea_ice_fraction[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • standard_name: sea_ice_area_fraction (Type is String)
    • long_name: sea ice fraction (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: percent (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 0.01000000000000000 (Type is Float64)
    • valid_min: -127 (Type is Int16)
    • valid_max: 127 (Type is Int16)
    • _FillValue: -128 (Type is Int16)
    • time_offset: 1.000000000000000 (Type is Float64)
    • source: NOAA/NESDIS/NCDC Daily optimum interpolation(OI) SST on 1/4-degree grid: 19960106-NCDC-L4LRblend-GLOB-v01-fv02_0-AVHRR_OI.nc.gz (Type is String)
    • comment: Sea ice concentration data are taken from the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSISAF) Global Daily Sea Ice Concentration Reprocessing Data Set (http://accession.nodc.noaa.gov/0068294) when these data are available. The data are reprojected and interpolated from their original polar stereographic projection at 10km spatial resolution to the 4km Pathfinder Version 5.3 grid. When the OSISAF data are not available for both hemispheres on a given day, the sea ice concentration data are taken from the sea_ice_fraction variable found in the L4 GHRSST DailyOI SST product from NOAA/NCDC, and are interpolated from the 25km DailyOI grid to the 4km Pathfinder Version 5.3 grid. (Type is String)
    • reference: Reynolds, et al.(2006) Daily High-resolution Blended Analyses. Available at http://doi.org/10.7289/V5SQ8XB5 (Type is String)
aerosol_dynamic_indicator[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • long_name: aerosol dynamic indicator (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: percent (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 1.000000000000000 (Type is Float64)
    • valid_min: -127 (Type is Int16)
    • valid_max: 127 (Type is Int16)
    • _FillValue: -128 (Type is Int16)
    • time_offset: 360.0000000000000 (Type is Float64)
    • source: CLASS_AVHRRPF_AOT (Type is String)
    • reference: http://www.class.ncdc.noaa.gov/saa/products/search?sub_id=0&datatype_family=AVHRRPF (Type is String)
    • comment: Aerosol optical thickness (AOT) data are taken from the CLASS Pathfinder (from AVHRR) (AVHRRPF). The aerosol optical thickness/depth (AOT/AOD) measurements are extracted from PATMOS-A2 monthly mean and reprojected and interpolated from their original 1 degree x 1 degree resolution to the 4km Pathfinder Version 5.3 grid. (Type is String)
quality_level[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • long_name: quality level of SST pixel (Type is String)
    • coverage_content_type: qualityInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: 1 (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 1.000000000000000 (Type is Float64)
    • valid_min: 1 (Type is Int16)
    • valid_max: 5 (Type is Int16)
    • _FillValue: 0 (Type is Int16)
    • flag_meanings: no_data bad_data worst_quality low_quality acceptable_quality best_quality (Type is String)
    • flag_values: 0, 1, 2, 3, 4, 5 (Type is Int16)
    • ancillary_variables: pathfinder_quality_level (Type is String)
    • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
    • platform: NOAA-14 (Type is String)
    • comment: These are the overall quality indicators and are used for all GHRSST SSTs. Note, the native Pathfinder processing system returns quality levels ranging from 0 to 7 (7 is best quality; -1 represents missing data) and has been converted to the extent possible into the six levels required by the GDS2 (ranging from 0 to 5, where 5 is best). Below is the conversion table: GDS2 required quality_level 5 = native Pathfinder quality level 7 == best_quality GDS2 required quality_level 4 = native Pathfinder quality level 4-6 == acceptable_quality GDS2 required quality_level 3 = native Pathfinder quality level 2-3 == low_quality GDS2 required quality_level 2 = native Pathfinder quality level 1 == worst_quality GDS2 required quality_level 1 = native Pathfinder quality level 0 = bad_data GDS2 required quality_level 0 = native Pathfinder quality level -1 = missing_data The original Pathfinder quality level is recorded in the optional variable pathfinder_quality_level. (Type is String)
pathfinder_quality_level[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • long_name: Pathfinder SST quality flag (Type is String)
    • coverage_content_type: qualityInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: 1 (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 1.000000000000000 (Type is Float64)
    • valid_min: 0 (Type is Int16)
    • valid_max: 7 (Type is Int16)
    • _FillValue: -1 (Type is Int16)
    • flag_meanings: bad_data worst_quality low_quality low_quality acceptable_quality acceptable_quality acceptable_quality best_quality (Type is String)
    • flag_values: 0, 1, 2, 3, 4, 5, 6, 7 (Type is Int16)
    • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
    • platform: NOAA-14 (Type is String)
    • comment: This variable contains the native Pathfinder processing system quality levels, ranging from 0 to 7, where 0 is worst and 7 is best. And value -1 represents missing data. (Type is String)
l2p_flags[ /time= 0..0] [ /lat= 0..4319] [ /lon= 0..8639] (Type is Int16)
  • attributes
    • long_name: L2P flags (Type is String)
    • coverage_content_type: auxiliaryInformation (Type is String)
    • grid_mapping: crs (Type is String)
    • units: 1 (Type is String)
    • add_offset: 0.000000000000000 (Type is Float64)
    • scale_factor: 1.000000000000000 (Type is Float64)
    • valid_min: 0 (Type is Int16)
    • valid_max: 256 (Type is Int16)
    • flag_meanings: microwave land ice lake river reserved_for_future_use extreme_sst unused_currently unused_currently (Type is String)
    • flag_masks: 1, 2, 4, 8, 16, 32, 64, 128, 256 (Type is Int16)
    • source: AVHRR_GAC-CLASS-L1B-NOAA_14-v1 (Type is String)
    • platform: NOAA-14 (Type is String)
    • comment: Bit zero (0) is always set to zero to indicate infrared data. Bit one (1) is set to zero for any pixel over water (ocean, lakes and rivers). Land pixels were determined by rasterizing the Global Self-consistent Hierarchical High-resolution Shoreline (GSHHS) Database from the NOAA National Geophysical Data Center. Any 4 km Pathfinder pixel whose area is 50% or more covered by land has bit one (1) set to 1. Bit two (2) is set to 1 when the sea_ice_fraction is 0.15 or greater. Bits three (3) and four (4) indicate lake and river pixels, respectively, and were determined by rasterizing the US World Wildlife Fund's Global Lakes and Wetlands Database. Any 4 km Pathfinder pixel whose area is 50% or more covered by lake has bit three (3) set to 1. Any 4 km Pathfinder pixel whose area is 50% or more covered by river has bit four (4) set to 1. Bits six (6) indicates the daytime unrealistic SST values (>39.8\302\260C) that remain in pf_quality_level 4 to 7. Users are recommended to avoid these values. (Type is String)
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