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Dataset Title:  Global SST & Sea Ice Analysis, L4 OSTIA, 0.05 deg daily (METOFFICE-GLO-SST-L4-
NRT-OBS-SST-V2)
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Institution:  UKMO   (Dataset ID: nasa_jpl_d024_dac2_2e1a)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      1910    1 day (even)
  < slider >
 latitude (degrees_north) ?      3600    0.05 (even)
  < slider >
 longitude (degrees_east) ?      7200    0.05 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 analysed_sst (analysed sea surface temperature, degree_C) ?
 analysis_error (estimated error standard deviation of analysed_sst, degree_C) ?
 sea_ice_fraction (sea ice area fraction, 1) ?
 mask (land sea ice lake bit mask) ?

File type: (more info)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.3668912e+9, 1.5318288e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "reference time of sst field";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -89.975, 89.975;
    String axis "Y";
    String comment "Latitude geographical coordinates,WGS84 projection";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
    Float32 valid_max 90.0;
    Float32 valid_min -90.0;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -179.975, 179.975;
    String axis "X";
    String comment "Longitude geographical coordinates,WGS84 projection";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_max 180.0;
    Float32 valid_min -180.0;
  }
  analysed_sst {
    Float32 _FillValue -327.68;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String comment "OSTIA foundation SST";
    String ioos_category "Temperature";
    String long_name "analysed sea surface temperature";
    String reference "C.J. Donlon, M. Martin,J.D. Stark, J. Roberts-Jones, E. Fiedler, W. Wimmer. The operational sea surface temperature and sea ice analysis (OSTIA) system. Remote Sensing Environ., 116 (2012), pp. 140-158 https://dx.doi.org/10.1016/j.rse.2010.10.017";
    String source "AVHRR18_G-NAVO-L2P-V1.0, AVHRR19_G-NAVO-L2P-V1.0, AVHRR_SST_METOP_B-OSISAF-L2P-V1.0, VIIRS_NPP-OSPO-L2P-V2.3, AMSR2-REMSS-L2P-V07.2, GOES13-OSISAF-L3C-V1.0, SEVIRI_SST-OSISAF-L3C-V1.0, OSISAF_ICE, NCEP_ICE";
    String standard_name "sea_surface_foundation_temperature";
    String units "degree_C";
    Float32 valid_max 44.999992;
    Float32 valid_min -3.0000062;
  }
  analysis_error {
    Float32 _FillValue -327.68;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    String comment "OSTIA foundation SST analysis standard deviation error";
    String ioos_category "Statistics";
    String long_name "estimated error standard deviation of analysed_sst";
    String standard_name "sea_surface_temperature_error";
    String units "degree_C";
    Float32 valid_max NaN;
    Float32 valid_min 0.0;
  }
  sea_ice_fraction {
    Float32 _FillValue -1.28;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String comment "Sea ice area fraction";
    String ioos_category "Ice Distribution";
    String long_name "sea ice area fraction";
    String source "EUMETSAT OSI-SAF";
    String standard_name "sea_ice_area_fraction";
    String units "1";
    Float32 valid_max 1.0;
    Float32 valid_min 0.0;
  }
  mask {
    Byte _FillValue -128;
    String _Unsigned "false";
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String comment "Land/ open ocean/ sea ice /lake mask";
    Byte flag_masks 1, 2, 4, 8, 16;
    String flag_meanings "water land optional_lake_surface sea_ice optional_river_surface";
    String ioos_category "Ice Distribution";
    String long_name "land sea ice lake bit mask";
    String source "NAVOCEANO_landmask_v1.0 EUMETSAT_OSI-SAF_icemask ARCLake_lakemask";
    String standard_name "land_binary_mask";
    Byte valid_max 31;
    Byte valid_min 1;
  }
  NC_GLOBAL {
    String acknowledgment "Please acknowledge the use of these data with the following statement: These data were provided by GHRSST, UKMO and CMEMS";
    String cdm_data_type "Grid";
    String comment "WARNING Some applications are unable to properly handle signed byte values. If values are encountered > 127, please subtract 256 from this reported value";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "servicedesk.cmems@mercator-ocean.eu";
    String creator_name "UKMO as part of CMEMS";
    String creator_url "http://marine.copernicus.eu";
    String date_created "2017-12-26T06:20:07Z";
    Float64 Easternmost_Easting 179.975;
    Int32 file_quality_level 3;
    Float64 geospatial_lat_max 89.975;
    Float64 geospatial_lat_min -89.975;
    Float64 geospatial_lat_resolution 0.049999999999999996;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.975;
    Float64 geospatial_lon_min -179.975;
    Float64 geospatial_lon_resolution 0.049999999999999996;
    String geospatial_lon_units "degrees_east";
    String history 
"Created from sst:temperature from /critical/fpos1/cylc-run/mi-aq810/share/cycle/20171226T0000Z/ostia/sst.nc; error:/critical/fpos1/cylc-run/mi-aq810/share/cycle/20171226T0000Z/ostia/20171225-UKMO-L4HRfnd-GLOB-v01-fv02-OSTIA_err.nc; sea ice:/critical/fpos1/cylc-run/mi-aq810/share/cycle/20171226T0000Z/ostia/seaice.nc
2018-07-19T08:13:31Z https://thredds.jpl.nasa.gov/thredds/dodsC/OceanTemperature/OSTIA-UKMO-L4-GLOB-v2.0.nc
2018-07-19T08:13:31Z http://upwell.pfeg.noaa.gov/erddap/griddap/nasa_jpl_d024_dac2_2e1a.das";
    String id "OSTIA-UKMO-L4-GLOB-v2.0";
    String infoUrl "https://podaac.jpl.nasa.gov/dataset/UKMO-L4HRfnd-GLOB-OSTIA";
    String institution "UKMO";
    String keywords "analysed, analysed_sst, analysis, analysis_error, area, binary, bit, cryosphere, daily, data, day, deviation, distribution, Earth Science > Cryosphere > Sea Ice > Ice Extent, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Sea Ice > Ice Extent, error, estimated, extent, foundation, fraction, glo, global, ice, ice distribution, kingdom, L4, lake, land, land_binary_mask, mask, meteorological, meteorology, metoffice, metoffice-glo-sst-l4-nrt-obs-sst-v2, near, nrt, obs, observations, ocean, oceans, office, operational, ostia, real, sea, sea_ice_area_fraction, sea_ice_fraction, sea_surface_foundation_temperature, sea_surface_temperature_error, sst, standard, statistics, surface, temperature, time, ukmo, united";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "These data are available free of charge under the CMEMS data policy";
    String metadata_link "https://podaac.jpl.nasa.gov/ws/metadata/dataset?format=gcmd&shortName=UKMO-L4HRfnd-GLOB-OSTIA";
    String naming_authority "org.ghrsst";
    String netcdf_version_id "4.1";
    Float64 Northernmost_Northing 89.975;
    String OSTIA_UKMO_L4_GLOB_v2_0_Documentation "https://podaac.jpl.nasa.gov/dataset/OSTIA-UKMO-L4-GLOB-v2.0";
    String platform "NOAA-18, NOAA-19, MetOpB, NPP, GCOM-W, GOES13, MSG3, DMSP-F17, DMSP-F15";
    String processing_level "L4";
    String product_version "2.0";
    String project "Group for High Resolution Sea Surface Temperature";
    String publisher_email "ghrsst-po@nceo.ac.uk";
    String publisher_name "GHRSST Project Office";
    String publisher_url "https://www.ghrsst.org";
    String references "Donlon, C.J., Martin, M., Stark, J.D., Roberts-Jones, J., Fiedler, E., Wimmer, W., 2011. The Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA). Remote Sensing of the Environment";
    String sensor "AVHRR, VIIRS, AMSR2, GOES_IMAGER, SEVIRI, SSMIS, SSM/I";
    String source "AVHRR18_G-NAVO-L2P-V1.0, AVHRR19_G-NAVO-L2P-V1.0, AVHRR_SST_METOP_B-OSISAF-L2P-V1.0, VIIRS_NPP-OSPO-L2P-V2.3, AMSR2-REMSS-L2P-V07.2, GOES13-OSISAF-L3C-V1.0, SEVIRI_SST-OSISAF-L3C-V1.0, OSISAF_ICE, NCEP_ICE";
    String sourceUrl "https://thredds.jpl.nasa.gov/thredds/dodsC/OceanTemperature/OSTIA-UKMO-L4-GLOB-v2.0.nc";
    Float64 Southernmost_Northing -89.975;
    String spatial_resolution "0.05 degree";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "A merged, multi-sensor L4 Foundation SST product (Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA)-United Kingdom Meteorology Office (UKMO)-L4-GLOB-v2.0)";
    String time_coverage_end "2018-07-17T12:00:00Z";
    String time_coverage_start "2013-04-25T12:00:00Z";
    String title "Global SST & Sea Ice Analysis, L4 OSTIA, 0.05 deg daily (METOFFICE-GLO-SST-L4-NRT-OBS-SST-V2)";
    String uuid "536d4865-f5a8-45b2-806f-1f1db491069a";
    Float64 Westernmost_Easting -179.975;
  }
}

 

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 (external link) Data Access Protocol (DAP) (external link) and its projection constraints (external link).

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.

griddap request URLs must be in the form
https://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://upwell.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.


 
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