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Dataset Title:  SST, VIIRS, Suomi-NPP, Day and Night, WN/Northwest US, Evaluation Data, 2014-
present, 3-Day
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Institution:  NOAA/NESDIS   (Dataset ID: erdVHsstaWN3day)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (Centered Time, UTC) ?      1446    1 day 0h 24m 55s (uneven)
  < slider >
 altitude (m) ?      1    (just one value)
  < slider >
 latitude (degrees_north) ?      1320    -0.007265927 (uneven)
  < slider >
 longitude (degrees_east) ?      1320    0.01024079 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 sst (Sea Surface Temperature, Celsius) ?
 nobs (Number of Observations) ?

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 1.4149296e+9, 1.5419376e+9;
    String axis "T";
    Int32 fraction_digits 0;
    String ioos_category "Time";
    String long_name "Centered Time";
    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 40.00687050518653, 49.59062860940499;
    String axis "Y";
    String coordsys "geographic";
    String ioos_category "Location";
    String long_name "Latitude";
    String point_spacing "even";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -135.00380380059582, -121.49619619940421;
    String axis "X";
    String coordsys "geographic";
    String ioos_category "Location";
    String long_name "Longitude";
    String point_spacing "even";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sst {
    Float32 _FillValue -100000.0;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    Int32 missing -100000;
    String units "Celsius";
  }
  nobs {
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Number of Observations";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String contact "John Sapper - NOAA Federal <john.sapper@noaa.gov>";
    String contributor_email "john.sapper@noaa.gov";
    String contributor_name "NOAA NESDIS CoastWatch Central";
    String contributor_role "source of Level 3 data";
    String Conventions "CF-1.6, COARDS, Unidata Dataset Discovery v1.0";
    String creator_email "erd.data@noaa.gov";
    String creator_name "NOAA NMFS SWFSC ERD";
    String creator_type "institution";
    String creator_url "https://www.pfeg.noaa.gov";
    Float64 Easternmost_Easting -121.49619619940421;
    Float64 geospatial_lat_max 49.59062860940499;
    Float64 geospatial_lat_min 40.00687050518653;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -121.49619619940421;
    Float64 geospatial_lon_min -135.00380380059582;
    Float64 geospatial_lon_resolution 0.010240794238962554;
    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";
    String history 
"erd.data@noaa.gov uses the CoastWatch Utilities to download the source data files from NOAA CoastWatch Central: /usr/local/cwf_3.3.0_54/bin/cwdownload  --region wn --script=/ctera/query1.cgi vmcwsst3.nesdis.noaa.gov
erd.data@noaa.gov generates a 3-day composite mean, with acspo_mask set to 0 or 2 (day and night values)
2018-11-15T02:57:53Z https://oceanwatch.pfeg.noaa.gov/thredds/dodsC/satellite/VH/sst/wn/3day
2018-11-15T02:57:53Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/erdVHsstaWN3day.das";
    String infoUrl "https://coastwatch.noaa.gov/cw_html/sst.html";
    String institution "NOAA/NESDIS";
    String keywords "composite, day, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, evaluation, experimental, joint, jpss, nesdis, night, noaa, northwest, npp, number, observations, ocean, oceans, orbiting, polar, satellite, sea, sea_surface_temperature, sst, statistics, suomi, surface, temperature, us, viirs, ws";
    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 "gov.noaa.pfeg.coastwatch";
    Float64 Northernmost_Northing 49.59062860940499;
    String product_version "ACSPO version 2.3";
    String references "Boris Petrenko and John Stroup (2013), ACSPO-VIIRS ALGORITHM THEORETICAL BASIS DOCUMENT, ftp://www.star.nesdis.noaa.gov/pub/sod/osb/aignatov/ACSPO";
    String rights "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, CoastWatch, 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 source_data "NPP_VIIRS";
    String sourceUrl "https://oceanwatch.pfeg.noaa.gov/thredds/dodsC/satellite/VH/sst/wn/3day";
    Float64 Southernmost_Northing 40.00687050518653;
    String spatial_resolution "0.8km";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "This is a 3-day composite of sea surface temperature (SST) data from the Visible and Infrared Imager/Radiometer Suite (VIIRS). VIIRS is a multi-disciplinary instrument that flies on the Suomi-NPP (National Polar-orbiting Partnership) satellite.  Suomi-NPP is the initial spacecraft in the JPSS (Joint Polar Satellite Systems) series of spacecraft. JPSS is our Nation's next generation polar-orbiting operational environmental satellite system. JPSS is a collaborative program between NOAA and its acquisition agent NASA. VIIRS is the successor to MODIS for Earth science data product generation. THIS IS AN EXPERIMENTAL PRODUCT: intended strictly for scientific evaluation by professional marine scientists.";
    String testOutOfDate "now-60days";
    String time_coverage_end "2018-11-11T12:00:00Z";
    String time_coverage_start "2014-11-02T12:00:00Z";
    String title "SST, VIIRS, Suomi-NPP, Day and Night, WN/Northwest US, Evaluation Data, 2014-present, 3-Day";
    Float64 Westernmost_Easting -135.00380380059582;
  }
}

 

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://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.


 
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