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Dataset Title:  VIIRS SST NPP NAR-OSISAF-L3C-v1.0 (SST) [time][nj][ni] Subscribe RSS
Institution:  OSISAF   (Dataset ID: nasa_jpl_aab8_25ea_03f0)
Information:  Summary ? | License ? | Metadata | Background (external link) | Data Access Form
 
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time (UTC) ?
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.384952399e+9, 1.526994e+9;
    String axis "T";
    String comment "includes leap seconds since 1981";
    String ioos_category "Time";
    String long_name "reference time of sst file";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  nj {
    Int16 actual_range 0, 3071;
    String ioos_category "Unknown";
    String long_name "NJ";
    String units "count";
  }
  ni {
    Int16 actual_range 0, 4095;
    String ioos_category "Unknown";
    String long_name "Ni";
    String units "count";
  }
  sea_surface_temperature {
    Float64 _FillValue -327.68;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String comment "Temperature of the subskin of the ocean";
    String depth "1 millimeter";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Temperature";
    String long_name "sea surface subskin temperature";
    String source "VIIRS";
    String standard_name "sea_surface_subskin_temperature";
    String units "degree_C";
    Float64 valid_max 45.0;
    Float64 valid_min -3.0;
  }
  sst_dtime {
    Int32 _FillValue -2147483648;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum -10.0;
    String comment "time plus sst_dtime gives seconds after 00:00:00 UTC January 1, 1981";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Temperature";
    String long_name "time difference from reference time";
    String units "seconds";
    Int32 valid_max 2147483647;
    Int32 valid_min -2147483647;
  }
  sses_bias {
    Float64 _FillValue -1.28;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    String comment "Bias estimate derived using the techniques describet at https://www.ghrsst.org/SSES-Description-of-schemes.html";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Statistics";
    String long_name "SSES bias estimate";
    String units "degree_C";
    Float64 valid_max NaN;
    Float64 valid_min -1.27;
  }
  sses_standard_deviation {
    Float64 _FillValue -0.28;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    String comment "Standard deviation estimate derived using the techniques describet at https://www.ghrsst.org/SSES-Description-of-schemes.html";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Statistics";
    String long_name "SSES standard deviation";
    String units "degree_C";
    Float64 valid_max NaN;
    Float64 valid_min -0.27;
  }
  dt_analysis {
    Float64 _FillValue -12.8;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    String comment "The difference between this SST and the previous day's SST analysis";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Statistics";
    String long_name "deviation from SST analysis or reference climatology";
    String reference "OSTIA";
    String units "degree_C";
    Float64 valid_max NaN;
    Float64 valid_min -12.700000000000001;
  }
  wind_speed {
    Byte _FillValue -128;
    String _Unsigned "false";
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum 0.0;
    String comment "These wind speeds were created by the ECMWF and represent winds at 10 metres above the sea surface";
    String grid_mapping "polar_stereographic_proj";
    String height "10 m";
    String ioos_category "Wind";
    String long_name "10m wind speed";
    String source "WSP-ECMWF-Forecast";
    String standard_name "wind_speed";
    Float64 time_offset -1.0;
    String units "m s-1";
    Byte valid_max 127;
    Byte valid_min 0;
  }
  sea_ice_fraction {
    Float64 _FillValue -1.28;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum 0.0;
    String comment "Fractional sea ice cover from OSISAF ice concentration product";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Ice Distribution";
    String long_name "sea ice fraction";
    String source "ICE-OSISAF";
    String standard_name "sea_ice_area_fraction";
    Float64 time_offset -25.0;
    Float64 valid_max 1.0;
    Float64 valid_min 0.0;
  }
  aerosol_dynamic_indicator {
    Float64 _FillValue -12.8;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Optical Properties";
    String long_name "aerosol dynamic indicator";
    String source "sources_of_adi";
    Float64 valid_max NaN;
    Float64 valid_min 0.0;
  }
  adi_dtime_from_sst {
    Float64 _FillValue -12.8;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum -10.0;
    String comment "Difference in hours between the ADI and SST data";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Temperature";
    String long_name "time difference of ADI data from sst measurement";
    String units "hour";
    Float64 valid_max NaN;
    Float64 valid_min -12.700000000000001;
  }
  sources_of_adi {
    Byte _FillValue -128;
    String _Unsigned "false";
    Float64 colorBarMaximum 2.5;
    Float64 colorBarMinimum 0.0;
    String comment "This variable provides a pixel by pixel description of where aerosol optical depth were derived from.";
    String flag_meanings "no_data AOD-NAAPS-ADI SDI-OSISAF-ADI";
    Byte flag_values 0, 1, 2;
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Optical Properties";
    String long_name "sources of aerosol dynamic indicator";
    Byte valid_max 2;
    Byte valid_min 0;
  }
  l2p_flags {
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String comment "These flags are important to properly use the data.";
    Int16 flag_masks 1, 2, 4, 8;
    String flag_meanings "microwave land ice lake";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Quality";
    String long_name "L2P flags";
    Int16 valid_max 15;
    Int16 valid_min 0;
  }
  quality_level {
    Byte _FillValue -128;
    String _Unsigned "false";
    Float64 colorBarMaximum 6.0;
    Float64 colorBarMinimum 0.0;
    String comment "These are the overall quality indicators and are used for all GHRSST SSTs";
    String flag_meanings "no_data bad_data worst_quality low_quality acceptable_quality best_quality";
    Byte flag_values 0, 1, 2, 3, 4, 5;
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Quality";
    String long_name "quality level of SST pixel";
    Byte valid_max 5;
    Byte valid_min 0;
  }
  satellite_zenith_angle {
    Byte _FillValue -128;
    String _Unsigned "false";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String comment "The satellite zenith angle at the time of the SST observations.";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Unknown";
    String long_name "satellite zenith angle";
    String units "angular_degree";
    Byte valid_max 90;
    Byte valid_min -90;
  }
  solar_zenith_angle {
    Float64 _FillValue -38.0;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String comment "The solar zenith angle at the time of the SST observations.";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Unknown";
    String long_name "solar zenith angle";
    String standard_name "solar_zenith_angle";
    String units "angular_degree";
    Float64 valid_max 180.0;
    Float64 valid_min 0.0;
  }
  or_latitude {
    Float64 _FillValue -327.68;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String comment "original latitude of the SST value";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Location";
    String long_name "original latitude of the SST value";
    String standard_name "latitude";
    String units "degrees_north";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
  }
  or_longitude {
    Float64 _FillValue -327.68;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String comment "original longitude of the SST value";
    String grid_mapping "polar_stereographic_proj";
    String ioos_category "Location";
    String long_name "original longitude of the SST value";
    String standard_name "longitude";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
  }
  NC_GLOBAL {
    String acknowledgment "In case SAF data (pre-operational or operational) has been used for the study described in a paper the following sentence would be an appropriate reference to the funding coming from EUMETSAT: The data from the EUMETSAT Satellite Application Facility on Ocean & Sea Ice  used in this study are accessible through the SAF's homepage http://www.osi-saf.org";
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "helpdesk@osi-saf.org";
    String creator_name "O&SI SAF";
    String creator_url "http://www.osi-saf.org";
    String date_created "2016-02-10T17:00:26Z";
    Int32 file_quality_level 2;
    String history 
"METEO-FRANCE/CMS SAFOV processor
2018-05-23T03:41:39Z https://thredds.jpl.nasa.gov/thredds/dodsC/OceanTemperature/VIIRS_SST_NPP_NAR-OSISAF-L3C-v1.0.nc
2018-05-23T03:41:39Z http://upwell.pfeg.noaa.gov/griddap/nasa_jpl_aab8_25ea_03f0.das";
    String id "VIIRS_SST_NPP_NAR-OSISAF-L3C-v1.0";
    String infoUrl "https://podaac.jpl.nasa.gov/dataset/VIIRS_SST_NPP_NAR-OSISAF-L3C-v1.0";
    String institution "OSISAF";
    String keywords "10m, adi, adi_dtime_from_sst, aerosol, aerosol_dynamic_indicator, analysis, angle, application, area, atmosphere, atmospheric, bias, climatology, cryosphere, data, deviation, difference, distribution, dt_analysis, dynamic, Earth Science > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation, Earth Science > Atmosphere > Atmospheric Radiation > Solar Irradiance, Earth Science > Atmosphere > Atmospheric Radiation > Solar Radiation, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Cryosphere > Sea Ice > Ice Extent, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Sea Ice > Ice Extent, error, estimate, extent, facility, flags, fraction, ice, ice distribution, imager, imager/radiometer, imaging, incoming, indicator, infrared, irradiance, l2p, l2p_flags, l3c, latitude, level, longitude, measurement, nar, nar-osisaf-l3c-v1.0, national, npp, ocean, oceans, optical, optical properties, or_latitude, or_longitude, orbiting, original, osi, osisaf, partnership, pixel, polar, polar-orbiting, properties, quality, quality_level, radiation, radiometer, reference, satellite, satellite_zenith_angle, sea, sea_ice_area_fraction, sea_ice_fraction, sea_surface_subskin_temperature, sea_surface_temperature, sensor, single, solar, solar_zenith_angle, sources, sources_of_adi, speed, sses, sses_bias, sses_standard_deviation, sst, sst_dtime, standard, statistics, subskin, suite, surface, temperature, time, v1.0, value, viirs, visible, wind, wind_speed, winds, zenith";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "All intellectual property rights of the Ocean & Sea Ice SAF products belong to EUMETSAT. The use of these products is granted to every user, free of charge. If users wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words 'Copyright EUMETSAT' under each of the products shown. EUMETSAT offers no warranty and accepts no liability in respect of the Ocean & Sea Ice SAF products. EUMETSAT neither commits to nor guarantees the continuity, availability, or quality or suitability for any purpose of, the Ocean & Sea Ice SAF products.";
    String naming_authority "org.ghrsst";
    String netcdf_version_id "4.2.1.1";
    String platform "NPP";
    String processing_level "L3C";
    String product_version "1.0";
    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 references "Low Earth Orbiter Sea Surface Temperature Product User Manual, http://www.osi-saf.or";
    String sensor "VIIRS";
    String source "VIIRS";
    String sourceUrl "https://thredds.jpl.nasa.gov/thredds/dodsC/OceanTemperature/VIIRS_SST_NPP_NAR-OSISAF-L3C-v1.0.nc";
    String spatial_resolution "2 km";
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "Sea Surface Temperature. The NAR L3C product derived from National Polar-orbiting Partnership (NPP) Visible and Infrared Imager/Radiometer Suite (VIIRS) brightness temperatures. (VIIRS SST NPP NAR-Ocean and Sea Ice Satellite Application Facility (OSISAF)-L3C-v1.0)";
    String time_coverage_end "2018-05-22T13:00:00Z";
    String time_coverage_start "2013-11-20T12:59:59Z";
    String title "VIIRS SST NPP NAR-OSISAF-L3C-v1.0 (SST) [time][nj][ni]";
    String uuid "C7EF27CA-D017-11E5-BC2F-D89D6714D2CC";
    String VIIRS_SST_NPP_NAR_OSISAF_L3C_v1_0_Documentation "https://podaac.jpl.nasa.gov/dataset/VIIRS_SST_NPP_NAR-OSISAF-L3C-v1.0";
  }
}

 

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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