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Dataset Title:  Wind, QuikSCAT, Global, Near Real Time (Monthly Composite)
Dataset ID:  erdQNwindmday
Institution:  NOAA CoastWatch, West Coast Node
Information:  Summary | Variables | Background | Data Access Form  

Graph Type: 
X Axis: 
Y Axis: 
Color: 

Dimension Ranges    Start    Stop
time (UTC)     specify just 1 value →
   
altitude (m)     specify just 1 value →
   
latitude (degrees_north)
   
   
longitude (degrees_east)
   
   

Graph Settings
Color Bar:    Continuity:    Scale:
      Min:    Max:    N Sections:
Draw the land mask:

Then set the File Type: and
  or view the URL:
    The graph you specified. Please be patient. It may take a long time to get data from the source.

Things You Can Do With Your Graphs

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.1374128e+9, 1.2294288e+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";
    Int32 fraction_digits 0;
    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 -75.0, 75.0;
    String axis "Y";
    String coordsys "geographic";
    Int32 fraction_digits 2;
    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 0.0, 360.0;
    String axis "X";
    String coordsys "geographic";
    Int32 fraction_digits 2;
    String ioos_category "Location";
    String long_name "Longitude";
    String point_spacing "even";
    String standard_name "longitude";
    String units "degrees_east";
  }
  x_wind {
    Float32 _FillValue -9999999.0;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String coordsys "geographic";
    Int32 fraction_digits 1;
    String ioos_category "Wind";
    String long_name "Zonal Wind";
    Float32 missing_value -9999999.0;
    String standard_name "x_wind";
    String units "m s-1";
  }
  y_wind {
    Float32 _FillValue -9999999.0;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String coordsys "geographic";
    Int32 fraction_digits 1;
    String ioos_category "Wind";
    String long_name "Meridional Wind";
    Float32 missing_value -9999999.0;
    String standard_name "y_wind";
    String units "m s-1";
  }
  divw {
    Float32 _FillValue -9999999.0;
    Float64 colorBarMaximum 3.0e-5;
    Float64 colorBarMinimum -3.0e-5;
    String coordsys "geographic";
    Int32 fraction_digits 7;
    String ioos_category "Wind";
    String long_name "Wind Divergence";
    Float32 missing_value -9999999.0;
    String units "s-1";
  }
  mod {
    Float32 _FillValue -9999999.0;
    Float64 colorBarMaximum 18.0;
    Float64 colorBarMinimum 0.0;
    String colorBarPalette "WhiteRedBlack";
    String coordsys "geographic";
    Int32 fraction_digits 1;
    String ioos_category "Wind";
    String long_name "Modulus of Wind";
    Float32 missing_value -9999999.0;
    String units "m s-1";
  }
  NC_GLOBAL {
    String acknowledgement "NOAA NESDIS COASTWATCH, NOAA SWFSC ERD";
    String cdm_data_type "Grid";
    String composite "true";
    String contributor_name "NASA JPL (Cal. Inst. of Technology)";
    String contributor_role "Source of level 2 data.";
    String Conventions "COARDS, CF-1.0, Unidata Dataset Discovery v1.0";
    String creator_email "dave.foley@noaa.gov";
    String creator_name "NOAA CoastWatch, West Coast Node";
    String creator_url "http://coastwatch.pfel.noaa.gov";
    String date_created "2008-12-01Z";
    String date_issued "2008-12-01Z";
    Float64 Easternmost_Easting 360.0;
    Float64 geospatial_lat_max 75.0;
    Float64 geospatial_lat_min -75.0;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 360.0;
    Float64 geospatial_lon_min 0.0;
    Float64 geospatial_lon_resolution 0.25;
    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 
"NASA JPL (Cal. Inst. of Technology)
2008-12-01T18:05:09Z NOAA CoastWatch (West Coast Node) and NOAA SFSC ERD
2009-02-17 http://192.168.31.18/thredds/dodsC/satellite/QN/ux10/mday
2009-02-17 http://coastwatch.pfeg.noaa.gov/griddap/erdQNwindmday.das";
    String infoUrl "http://coastwatch.pfel.noaa.gov/infog/QN_ux10_las.html";
    String institution "NOAA CoastWatch, West Coast Node";
    String keywords "EARTH SCIENCE > Oceans > Ocean Winds > Surface Winds";
    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, 
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 naming_authority "gov.noaa.pfel.coastwatch";
    Float64 Northernmost_Northing 75.0;
    String origin "NASA JPL (Cal. Inst. of Technology)";
    String processing_level "3";
    String project "CoastWatch (http://coastwatch.noaa.gov/)";
    String projection "geographic";
    String projection_type "mapped";
    String references "NASA/JPL Winds: http://winds.jpl.nasa.gov/ .";
    String satellite "QuikSCAT";
    String sensor "SeaWinds";
    String source "satellite observation: QuikSCAT, SeaWinds";
    String sourceUrl "http://192.168.31.18/thredds/dodsC/satellite/QN/ux10/mday";
    Float64 Southernmost_Northing -75.0;
    String standard_name_vocabulary "CF-1.0";
    String summary 
"NASA's Jet Propulsion Laboratory (JPL) distributes near real time wind 
velocity data from the SeaWinds instrument onboard NASA's QuikSCAT 
satellite.  SeaWinds is a microwave scatterometer designed to measure 
surface winds over the global ocean.  Wind velocity fields are provided in 
zonal, meridional, and modulus sets. The reference height for all wind 
velocities is 10 meters.";
    String title "Wind, QuikSCAT, Global, Near Real Time (Monthly Composite)";
    Float64 Westernmost_Easting 0.0;
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request gridded data (for example, environmental data from satellites) and graphs of gridded data, via specially formed URLs.
The URLs specify everything: the dataset, the desired file type for the response, and the subset of data that you want to receive.
You can form these URLs by hand or with a computer program,
or (much easier) you can use the dataset's "Data Access Form" (oriented to requests for data)
or the dataset's "Make A Graph" form (oriented to requests for graphs and maps),
both of which generate the URL when the form is submitted.
griddap is a superset of the OPeNDAP DAP hyperslab protocol.

griddap request URLs must be in the form
   http://coastwatch.pfeg.noaa.gov/erddap/griddap/ datasetID fileType {?query}
For example,
   http://coastwatch.pfeg.noaa.gov/erddap/griddap/erdBAssta5day.htmlTable?sst[(2007-10-21T00:00:00)][0][(-75):100:(75)][(180):100:(360)]

For details, see the griddap Documentation.
 
ERDDAP Version 1.12

Questions, comments, suggestions? Contact bob dot simons at noaa dot gov.
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