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Dataset Title:  Ice Thickness, NOAA-20 VIIRS, Near Real-Time, Sector VW, Daily   RSS
Institution:  NOAA NESDIS CoastWatch   (Dataset ID: noaacwVIIRSn20icethickVW00Daily)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background | Data Access Form | Files
Graph Type:  ?
X Axis:  ?
Y Axis:  ?
Color:  ?
Dimensions ?    Start ?    Stop ?
time (UTC) ?     specify just 1 value →
    |< -
< <
altitude (m) ?     specify just 1 value →
< <
latitude (degrees_north) ?
< slider >
longitude (degrees_east) ?
< slider >
Graph Settings
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   
(Please be patient. It may take a while to get the data.)
Then set the File Type: (File Type information)
or view the URL:
(Documentation / Bypass this form ? )
    Click on the map to specify a new center point. ?
[The graph you specified. Please be patient.]


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 1.5999968206245e+9, 1.720425116336e+9;
    String axis "T";
    String bounds "time_bounds";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "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 -89.77125, -44.77875;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -120.03375, -59.96624999999998;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  IceThickness {
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 3.0;
    Float64 colorBarMinimum 0.0;
    String grid_mapping "coord_ref";
    String ioos_category "Ice Distribution";
    String long_name "Ice thickness";
    Float32 missing_value -999.0;
    String units "meter";
    Float32 valid_max 6.0;
    Float32 valid_min 0.005;
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "";
    String creator_name "NOAA/NESDIS/STAR/SOCD/CoastWatch";
    String creator_url "";
    String date_created "2024-07-10T10:50:29Z";
    String defaultGraphQuery "IceThickness[(last)]";
    Float64 Easternmost_Easting -59.96624999999998;
    Int32 end_orbit_number 34394;
    String geospatial_bounds "POLYGON((-120.03375 -44.77875,-105.016875 -44.77875,-90.0 -44.77875,-74.983125 -44.77875,-59.96625 -44.77875,-59.96625 -56.026875,-59.96625 -67.275,-59.96625 -78.523125,-59.96625 -89.77125,-74.983125 -89.77125,-90.0 -89.77125,-105.016875 -89.77125,-120.03375 -89.77125,-120.03375 -78.523125,-120.03375 -67.275,-120.03375 -56.026875,-120.03375 -44.77875))";
    Float64 geospatial_lat_max -44.77875;
    Float64 geospatial_lat_min -89.77125;
    Float64 geospatial_lat_resolution 0.007499999999999999;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -59.96624999999998;
    Float64 geospatial_lon_min -120.03375;
    Float64 geospatial_lon_resolution 0.007500000000000002;
    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 
"[cwutils 20240513_133416] cwcomposite --pedantic --coherent IceThickness/latitude --optimal sat_zenith/minabs --method optimal --inputs - --match ^(ProdQualInfo|longitude|sat_zenith|latitude|IceThickness)$ /home/pub/svc_cwatch/aps/aps_z/browse/lvl4/modis/coastwatch/hdf/VX1ACW_C2024190_C50_010341-011048_024025-024856_041708-042956_055808-061056_074034-074324_074739_092008-093421_111355_143847_VW00_edgemask_IceThickness.hdf
[cwutils 20240513_133416] cwgraphics /home/pub/svc_cwatch/aps/aps_z/browse/lvl4/modis/coastwatch/hdf/VX1ACW_C2024190_C50_010341-011048_024025-024856_041708-042956_055808-061056_074034-074324_074739_092008-093421_111355_143847_VW00_edgemask_IceThickness.hdf
2024-07-14T02:04:16Z (local files)
    String identifier_product_doi_authority "";
    String infoUrl "";
    String institution "NOAA NESDIS CoastWatch";
    String instrument "VIIRS";
    String keywords "Earth Science > Cryosphere > Sea Ice > Ice Depth/Thickness, Earth Science > Oceans > Sea Ice > Ice Depth/Thickness";
    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.coastwatch";
    Float64 Northernmost_Northing -44.77875;
    String OBSERVED_PROPERTY "IceThickness";
    String platform "NOAA-20";
    String source "NOAA-20_VIIRS_IceThickness";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -89.77125;
    String standard_name_vocabulary "CF Standard Name Table v29";
    Int32 start_orbit_number 34386;
    String summary "Enterprise Ice Thickness/ Age Products";
    String testOutOfDate "now-2days";
    String time_coverage_end "2024-07-08T07:51:56Z";
    String time_coverage_start "2020-09-13T11:33:40Z";
    String title "Ice Thickness, NOAA-20 VIIRS, Near Real-Time, Sector VW, Daily";
    Float64 Westernmost_Easting -120.03375;


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{?query}
For example,[(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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