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Dataset Title:  Sea Surface Wind (Experimental), NOAA NCEI blended 6hr averaged 0.25° Version
2.0, Science Quality (1987-recent), 6 hour
  RSS
Institution:  NOAA NESDIS NCEI   (Dataset ID: noaacwBlendedWinds6hr)
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 →
    |< - >|
< <
zlev (meters) ?     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.)
 
Optional:
Then set the File Type: (File Type information)
and
or view the URL:
(Documentation / Bypass this form ? )
    Click on the map to specify a new center point. ?
Zoom:
[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 5.527872e+8, 1.6725096e+9;
    String axis "T";
    String calendar "gregorian";
    String coverage_content_type "coordinate";
    String ioos_category "Time";
    String long_name "Center Time of the Data";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  zlev {
    Float32 actual_range 10.0, 10.0;
    String axis "Z";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "height above sea level";
    String positive "up";
    String standard_name "altitude";
    String units "meters";
    Float32 valid_max 10.0;
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -89.75, 89.75;
    String axis "Y";
    String coverage_content_type "coordinate";
    String grids "uniform grids from -89.75 to 89.75 by 0.25";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
    Float32 valid_max 89.75;
    Float32 valid_min -89.75;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 0.0, 359.75;
    String axis "X";
    String coverage_content_type "coordinate";
    String grids "uniform grids from 0.00 to 359.75 by 0.25";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_max 359.75;
    Float32 valid_min 0.0;
  }
  u_wind {
    Float32 _FillValue -9999.0;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String coverage_content_type "physicalMeasurement";
    String height "10 m";
    String ioos_category "Wind";
    String long_name "zonal wind component";
    String standard_name "eastward_wind";
    String units "m s-1";
  }
  v_wind {
    Float32 _FillValue -9999.0;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String coverage_content_type "physicalMeasurement";
    String height "10 m";
    String ioos_category "Wind";
    String long_name "meridional wind component";
    String standard_name "northward_wind";
    String units "m s-1";
  }
  mask {
    Int32 _FillValue -9999;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String coverage_content_type "auxiliaryInformation";
    String ioos_category "Identifier";
    String long_name "Blended Wind land/ocean/lake/river/model mask";
    String mask_values "0=land, 1=ocean, 2=lake, 3=river, 6=model";
    String standard_name "land_binary_mask";
    String units "degrees";
  }
  NC_GLOBAL {
    String acknowledgement "The gridded data were generated from the multiple satellite observations of DOD, NOAA and NASA (and future others) and wind retrievals of the Remote Sensing Systems, Inc. (http://www.remss.com), using scientific methods such as objective analysis (OA). The OA is only truly objective when the needed statistics are completely known, which may not always be the case. The ERA-5 wind directions and stresses were downloaded from the Copernicus Climate Change Service (C3S) Climate Data Store";
    String cdm_data_type "Grid";
    String contributor_name "Korak Saha, Huai-min Zhang";
    String contributor_role "PI";
    String Conventions "CF-1.7, ACDD-1.3, COARDS";
    String creator_email "ncei.seawinds@noaa.gov";
    String creator_institution "US DOC; NOAA; National Environmental Satellite Data and Information Service; National Centers for Environmental Information";
    String creator_name "NCEI";
    String creator_type "institution";
    String creator_url "https://www.ncei.noaa.gov/products/blended-sea-winds";
    String date_created "2023-01-10T12:55:59.836655Z";
    String date_metadata_modified "2023-01-10T12:55:59.837486Z";
    String date_modified "2023-01-10T12:55:59.836704Z";
    Float64 Easternmost_Easting 359.75;
    String geospatial_bounds "POLYGON ((0 -89.75, 0 89.75, 359.75 89.75, 359.75 -89.75, 0 -89.75))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 89.75;
    Float64 geospatial_lat_min -89.75;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 359.75;
    Float64 geospatial_lon_min 0.0;
    Float64 geospatial_lon_resolution 0.25;
    String geospatial_lon_units "degrees_east";
    String grid_mapping_epsg_code "EPSG:4326";
    Float64 grid_mapping_inverse_flattening 298.257223563;
    String grid_mapping_name "latitude_longitude";
    Float64 grid_mapping_semi_major_axis 6378137.0;
    String history 
"Simple spatiotemporally weighted Interpolation (SI), V.1.2. Version 1.2 uses updated satellite retrievals by Remote Sensing System, released in September 2006: SSMI V06, TMI V04, QSCAT V03a. AMSRE V05 was also updated using the new SSMI rain rate. V2.0 uses updated retrievals by Remote Sensing System, released in 2017: SSMI V07, TMI V07.1, QSCAT V04, AMSRE V07 and AMSR2 v08.2 released in 2021.
2023-02-02T23:41:22Z (local files)
2023-02-02T23:41:22Z https://coastwatch.noaa.gov/griddap/noaacwBlendedWinds6hr.das";
    String id "uv_6hourly20221231";
    String infoUrl "https://coastwatch.noaa.gov/cwn/products/noaa-ncei-experimental-blended-seawinds-nbs-v2.html";
    String institution "NOAA NESDIS NCEI";
    String instrument "SSM/I, TMI, SEAWINDS, AMSR-E, AMSR2, ASCAT, GMI, WINDSAT, SMAP L-BAND RADAR";
    String instrument_vocabulary "NASA Global Change Master Directory (GCMD) Platform Keywords version 10.2";
    String keywords "0.25-degree, 6-hourly, air-sea flux, air-sea interaction, atmosphere, atmospheric, binary, blended, centers, component, data, degree, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, eastward, eastward_wind, ekman pumping, ekman transport, environmental, hour, hourly, identifier, information, lake, land, land/ocean/lake/river/model, land_binary_mask, mask, meridional, model, national, ncei, nesdis, noaa, northward, northward_wind, ocean, ocean upwelling, ocean winds, river, science, sea, sea surface winds, sea winds, surface, time, u_wind, v_wind, version, wind, wind stress, wind-driven circulation, winds, windstress, zlev, zonal";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "These data are publically available for use with citation of this data source.";
    String naming_authority "gov.noaa.ncei";
    Float64 Northernmost_Northing 89.75;
    String platform "DMSP 5D-2/F8,DMSP 5D-2/F10,DMSP 5D-2/F11,DMSP 5D-2/F13,DMSP 5D-2/F14,DMSP 5D-3/F15, DMSP 5D-3/F16, DMSP 5D-3/F17, TRMM, QUIKSCAT, AQUA, GCOM-W1, METOP-A, METOP-B, GPM, CORIOLIS, SMAP";
    String platform_vocabulary "NASA Global Change Master Directory (GCMD) Platform Keywords version 10.2";
    String processing_level "NOAA L4";
    String product_version "V2.0";
    String program "NOAA/NCEI Satellite Oceanography Product Area";
    String project "NOAA/NCEI Satellite Oceanography Product Area - Blended Sea Winds";
    String publisher_email "ncei.info@noaa.gov, ncei.seawinds@noaa.gov";
    String publisher_institution "NOAA National Centers for Environmental Information";
    String publisher_name "NOAA National Centers for Environmental Information";
    String publisher_type "institution";
    String publisher_url "https://www.ncei.noaa.gov/";
    String references "https://coastwatch.noaa.gov/cwn/products/noaa-ncei-experimental-blended-seawinds-nbs-v2.html and Zhang, H.-M., J. J. Bates, and R. W. Reynolds, 2006: Assessment of composite global sampling: Sea surface wind speed, Geophysical Research Letters, 33, L17714, https://dx.doi.org/10.1029/2006GL027086";
    String source "Multiple satellite observations: DMSP SSMI F08, F10, F11, F13, F14 F15, F16, F17; TMI; QuikSCAT; AMSR-E; AMSR2; ASCAT; GMI; WINDSAT; SMAP L-BAND RADAR; Direction from ERA5 Reanalysis";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -89.75;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "This netCDF file  contains 0.25-degree globally gridded and 6-hourly ocean surface vector winds created by the NOAA National Centers for Environmental Information (NCEI).The dataset covers from July 1987 to present with quasi-daily updates. Averaged daily and monthly data are also available. Details can be found at https://www.ncdc.noaa.gov/data-access/marineocean-data/blended-global/blended-sea-winds";
    String time_coverage_duration "P1DT6H";
    String time_coverage_end "2022-12-31T18:00:00Z";
    String time_coverage_resolution "P1DT6H";
    String time_coverage_start "1987-07-09T00:00:00Z";
    String title "Sea Surface Wind (Experimental), NOAA NCEI blended 6hr averaged 0.25° Version 2.0, Science Quality (1987-recent), 6 hour";
    Float64 Westernmost_Easting 0.0;
  }
}

 

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://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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