ERDDAP > griddap > Data Access Form

Dataset Title:	Sea-Surface Temperature, S-NPP VIIRS ACSPO Daily Global 4km CoastWatch Co- Gridded SST, Near Real-time, Daily (L3 Co-Gridded Kelvin)
Institution:	NOAA/NESDIS/OSPO   (Dataset ID: noaacwSNPPACSPOSSTL3GKDaily)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Files | Make a graph

 

Dimensions	Start	Stride	Stop	Size	Spacing
time (Centered Time, UTC)				2048	1 day 1h 40m 36s (uneven)
altitude (m)				1	(just one value)
latitude (degrees_north)				4788	-0.0375 (even)
longitude (degrees_east)				9600	0.0375 (even)

Grid Variables (which always also download all of the dimension variables)

sea_surface_temperature (kelvin)

graphics (graphics overlay planes)

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .croissant - Download the dataset croissant schema. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriAscii - Download an ISO-8859-1 ESRI ASCII file (latitude longitude data only; longitude must be all below or all above 180). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115/19139 UTF-8 .xml metadata using the version default for this server. .iso19115_2 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .iso19115_3_2016 - View the dataset's ISO 19115-3:2016 UTF-8 .xml metadata. .iso19139_2007 - View the dataset's ISO 19139:2007 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each axis variable and each data variable becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncml - View the dataset's structure and metadata as a UTF-8 NCML .xml file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download time,latitude,longitude,otherVariables as an ODV Generic Spreadsheet File (.txt). .parquet - Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). .parquetWMeta - Download as a parquet file with detailed metadata. .timeGaps - View a UTF-8 list of gaps in the time values which are larger than the median gap. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .geotif - View a grayscale GeoTIFF .tif file (for latitude longitude data; longitude must be all below or all above 180). .kml - View a Google Earth .kml file (for latitude, longitude data only). .largePdf - View a large .pdf image file with a graph or map. .largePng - View a large .png image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .smallPdf - View a small .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5790896e+9, 1.7683056e+9;
    String axis "T";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "Centered Time";
    String source_name "time_baseline";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  altitude {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float64 actual_range 0.0, 0.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Altitude";
    String positive "up";
    String standard_name "altitude";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -89.75625000000002, 89.75625000000001;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "rows";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -179.98125000000002, 179.98124999999996;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "cols";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sea_surface_temperature {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 305.0;
    Float64 colorBarMinimum 271.0;
    String comment "SST obtained by regression with buoy measurements, sensitive to skin SST. Further information at (Petrenko et al., JGR, 2014; doi:10.1002/2013JD020637)";
    String cw_atmospheric_correction "Advanced Clear-Sky Processor for Oceans (ACSPO)-VIIRS";
    Int32 cw_fraction_digits 14;
    String ioos_category "Temperature";
    String long_name "sea surface sub-skin temperature";
    Float32 missing_value NaN;
    String source "NOAA";
    String standard_name "sea_surface_subskin_temperature";
    String units "kelvin";
    Float32 valid_max 600.82;
    Float32 valid_min 271.15;
  }
  graphics {
    Byte _FillValue 0;
    String _Unsigned "true";
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    Int32 cw_fraction_digits 0;
    String ioos_category "Optical Properties";
    String long_name "graphics overlay planes";
    Byte missing_value 0;
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.10, COARDS, ACDD-1.3";
    String creator_email "veronica.lance@noaa.gov";
    String creator_name "Veronica Lance";
    String creator_type "person";
    String creator_url "http://www.star.nesdis.noaa.gov";
    String cw_cwhdf_version "3.1";
    Float64 cw_et_affine 0.0, -0.037500000000000006, 0.0375, 0.0, -179.98125000000002, 89.75625000000001;
    Int32 cw_gctp_datum 12;
    Float64 cw_gctp_parm 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0;
    Int32 cw_gctp_sys 0;
    Int32 cw_gctp_zone 62;
    Int32 cw_pass_date 20466, 20466, 20466, 20466, 20466, 20466, 20466, 20466, 20466, 20466, 20466, 20466, 20466, 20466;
    String cw_pass_type "day/night";
    String cw_projection "Geographic";
    String cw_satellite "S-NPP";
    String cw_sensor "VIIRS";
    String cw_software_name "ACSPO";
    String cw_software_version "2.80";
    Float64 cw_start_time 21601.0, 58200.0, 64200.0, 70200.0, 76201.0, 27600.0, 51601.0, 27001.0, 33600.0, 33000.0, 45000.0, 45599.0, 39600.0, 39000.0;
    Int32 cw_swath_sync_lines 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;
    Float64 cw_temporal_extent 598.0, 599.0, 598.0, 600.0, 599.0, 599.0, 598.0, 598.0, 598.0, 599.0, 600.0, 601.0, 600.0, 599.0;
    String date_created "2026-01-14T10:39:11Z";
    Float64 Easternmost_Easting 179.98124999999996;
    Float64 geospatial_lat_max 89.75625000000001;
    Float64 geospatial_lat_min -89.75625000000002;
    Float64 geospatial_lat_resolution 0.03750000000000001;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.98124999999996;
    Float64 geospatial_lon_min -179.98125000000002;
    Float64 geospatial_lon_resolution 0.0375;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "up";
    String geospatial_vertical_units "m";
    Float64 grid_mapping_inverse_flattening 298.257223563;
    Float64 grid_mapping_longitude_of_prime_meridian 0.0;
    String grid_mapping_name "latitude_longitude";
    Float64 grid_mapping_semi_major_axis 6378137.0;
    String history 
"[cwutils 4.0.1.7 20240513_133416] cwcomposite --pedantic --coherent sea_surface_temperature/latitude --optimal satellite_zenith_angle/minabs --method optimal --inputs - --match ^(sses_standard_deviation|satellite_zenith_angle|longitude|sses_bias|l2p_flags|latitude|sea_surface_temperature)$ /home/pub/svc_cwatch/aps/aps_u/browse/lvl4/modis/coastwatch/hdf/VSSTNCW_B2026013_C14_060001_073001_074000_091000_092000_105000_110000_123000_123959_142001_161000_175000_193000_211001_UW00_mixed_seasurfacetemperature.hdf
[cwutils 4.0.1.7 20240513_133416] cwgraphics /home/pub/svc_cwatch/aps/aps_u/browse/lvl4/modis/coastwatch/hdf/VSSTNCW_B2026013_C14_060001_073001_074000_091000_092000_105000_110000_123000_123959_142001_161000_175000_193000_211001_UW00_mixed_seasurfacetemperature.hdf
[cwutils 4.0.1.7 20240513_133416] cwimport --match=^graphics$ --copy /home/pub/svc_cwatch/aps/aps/aps/share/coastwatch/icons/GlobalFourKmGeographic.hdf /home/pub/svc_cwatch/aps/aps_w/browse/lvl4/modis/coastwatch/maskhdf/VSSTNCW_B2026013_B2026013_D1_WW00_mixed_seasurfacetemperature.hdf
2026-03-05T22:18:37Z (local files)
2026-03-05T22:18:37Z https://coastwatch.noaa.gov/erddap/griddap/noaacwSNPPACSPOSSTL3GKDaily.das";
    String infoUrl "http://www.star.nesdis.noaa.gov";
    String institution "NOAA/NESDIS/OSPO";
    String instrument "VIIRS";
    String keywords "altitude, baseline, cols, daily, data, day, earth, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, environmental, graphics, imager, imager/radiometer, imaging, information, infrared, merge, national, nesdis, noaa, npp, ocean, oceans, office, operations, optical, optical properties, orbiting, osdpd, ospo, overlay, partnership, planes, polar, polar-orbiting, product, properties, radiometer, rows, s-npp, satellite, science, sea, sea_surface_temperature, seasurfacetemperature, service, skin, sst, sub, sub-skin, suite, surface, temperature, time, time_baseline, viirs, visible";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String naming_authority "org.ghrsst";
    Float64 Northernmost_Northing 89.75625000000001;
    String OBSERVED_PROPERTY "sea_surface_temperature";
    String platform "S-NPP";
    String processing_level "L2P";
    String project "Group for High Resolution Sea Surface Temperature";
    String publisher_email "ghrsst-po@nceo.ac.uk";
    String publisher_name "The GHRSST Project Office";
    String publisher_url "https://www.ghrsst.org";
    String source "S-NPP VIIRS";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -89.75625000000002;
    String standard_name_vocabulary "CF Standard Name Table v79";
    String summary "Daily Merge seasurfacetemperature from S-National Polar-orbiting Partnership (NPP) Visible and Infrared Imager/Radiometer Suite (VIIRS)";
    String testOutOfDate "now-5days";
    String time_coverage_end "2026-01-13T12:00:00Z";
    String time_coverage_start "2020-01-15T12:00:00Z";
    String title "Sea-Surface Temperature, S-NPP VIIRS ACSPO Daily Global 4km CoastWatch Co-Gridded SST, Near Real-time, Daily (L3 Co-Gridded Kelvin)";
    Float64 Westernmost_Easting -179.98125000000002;
  }
}

 

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Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP Data Access Protocol (DAP) and its projection constraints.

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

• (easy) You can get data by using the dataset's Data Access Form. It makes the URL for you.
• (easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
• (not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.