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Dataset Title:  WaveWatch III (WW3) Global Wave Model Subscribe RSS
Institution:  University of Hawaii   (Dataset ID: NWW3_Global_Best)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      68277    1h 0m 44s (uneven)
  < slider >
 depth (m) ?      1    (just one value)
  < slider >
 latitude (degrees_north) ?      311    0.5 (even)
  < slider >
 longitude (degrees_east) ?      720    0.5 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 Tdir (peak wave direction, degrees) ?
 Tper (peak wave period, second) ?
 Thgt (significant wave height, meters) ?
 sdir (swell peak wave direction, degrees) ?
 sper (swell peak wave period, seconds) ?
 shgt (swell significant wave height, meters) ?
 wdir (wind peak wave direction, degrees) ?
 wper (wind peak wave period, seconds) ?
 whgt (wind significant wave height, meters) ?

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 1.2891636e+9, 1.5379524e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "Forecast time for ForecastModelRunCollection";
    Float64 missing_value NaN;
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.0, 0.0;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String short_name "depth";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -77.5, 77.5;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String short_name "lat";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 0.0, 359.5;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String short_name "lon";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Tdir {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "peak wave direction";
    String short_name "Tdir";
    String standard_name "sea_surface_wave_from_direction";
    String units "degrees";
    Float32 valid_range 0.0, 360.0;
  }
  Tper {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "peak wave period";
    String short_name "Tper";
    String standard_name "sea_surface_wave_period_at_variance_spectral_density_maximum";
    String units "second";
    Float32 valid_range 0.0, 60.0;
  }
  Thgt {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "significant wave height";
    String short_name "Thgt";
    String standard_name "sea_surface_wave_significant_height";
    String units "meters";
    Float32 valid_range 0.0, 60.0;
  }
  sdir {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "swell peak wave direction";
    String short_name "sdir";
    String standard_name "sea_surface_swell_wave_from_direction";
    String units "degrees";
    Float32 valid_range 0.0, 360.0;
  }
  sper {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "swell peak wave period";
    String short_name "sper";
    String standard_name "sea_surface_swell_wave_period";
    String units "seconds";
    Float32 valid_range 0.0, 60.0;
  }
  shgt {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "swell significant wave height";
    String short_name "shgt";
    String standard_name "sea_surface_swell_wave_significant_height";
    String units "meters";
    Float32 valid_range 0.0, 60.0;
  }
  wdir {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "wind peak wave direction";
    String short_name "wdir";
    String standard_name "sea_surface_wind_wave_from_direction";
    String units "degrees";
    Float32 valid_range 0.0, 360.0;
  }
  wper {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "wind peak wave period";
    String short_name "wper";
    String standard_name "sea_surface_wind_wave_period";
    String units "seconds";
    Float32 valid_range 0.0, 60.0;
  }
  whgt {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time z lat lon";
    String ioos_category "Surface Waves";
    String long_name "wind significant wave height";
    String short_name "whgt";
    String standard_name "sea_surface_wind_wave_significant_height";
    String units "meters";
    Float32 valid_range 0.0, 60.0;
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.CF1Convention";
    String acknowledgement "The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST).";
    String cdm_data_type "Grid";
    String comment "Model runs produced by Dr. Kwok Fai Cheung (cheung@hawaii.edu).";
    String contributor_name "Jim Potemra";
    String contributor_role "distributor";
    String Conventions "CF-1.6, ACDD-1.3";
    String creator_email "cheung@hawaii.edu";
    String creator_institution "University of Hawaii";
    String creator_name "Kwok Fai Cheung";
    String creator_type "person";
    String creator_url "http://www.ore.hawaii.edu/OE/cheung_research.htm";
    String date_created "2010-06-20";
    String date_issued "2010-06-20";
    String date_metadata_modified "2017-01-30";
    String date_modified "2014-06-23";
    String defaultGraphQuery "Thgt";
    Float64 Easternmost_Easting 359.5;
    String geospatial_bounds "POLYGON ((-77.5 -180.0, 77.5 -180.0, 77.5 180.0, -77.5 180.0, -77.5 -180.0))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 77.5;
    Float64 geospatial_lat_min -77.5;
    Float64 geospatial_lat_resolution 0.5;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 359.5;
    Float64 geospatial_lon_min 0.0;
    Float64 geospatial_lon_resolution 0.5;
    String geospatial_lon_units "degrees_east";
    String history 
"FMRC Best Dataset
2018-09-24T16:09:21Z http://localhost:8080/thredds/dodsC/hioos/model/wav/ww3/WaveWatch_III_Global_Wave_Model_best.ncd
2018-09-24T16:09:21Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/NWW3_Global_Best.das";
    String id "ww3_global";
    String infoUrl "http://www.pacioos.hawaii.edu/waves/model-global/";
    String institution "University of Hawaii";
    String instrument "Not Applicable > Not Applicable";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "oceans";
    String keywords "Earth Science > Oceans > Ocean Waves > Significant Wave Height, Earth Science > Oceans > Ocean Waves > Wave Period, Earth Science > Oceans > Ocean Waves > Wave Speed/Direction, Earth Science Services > Models > Ocean General Circulation Models (OGCM)/Regional Ocean Models, Earth Science Services > Models > Weather Research/Forecast Models";
    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, University of Hawaii, PacIOOS, NOAA, State of Hawaii 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 location "Proto fmrc:WaveWatch_III_Global_Wave_Model";
    String locations "Geographic Region > Global Ocean";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/ww3_global.html";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing 77.5;
    String platform "Models/Analyses > > Operational Models";
    String platform_vocabulary "GCMD Platform Keywords";
    String program "Pacific Islands Ocean Observing System (PacIOOS)";
    String project "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_email "info@pacioos.org";
    String publisher_institution "University of Hawaii";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "group";
    String publisher_url "http://www.pacioos.hawaii.edu";
    String references "http://www.pacioos.hawaii.edu/waves/model-global/, http://polar.ncep.noaa.gov/waves/wavewatch/";
    String source "WaveWatch III (WW3) numerical wave model";
    String sourceUrl "http://localhost:8080/thredds/dodsC/hioos/model/wav/ww3/WaveWatch_III_Global_Wave_Model_best.ncd";
    Float64 Southernmost_Northing -77.5;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "Through a collaborative effort with NOAA/NCEP and NWS Honolulu, the University of Hawaii has implemented a global-scale WaveWatch III (WW3) 7-day model with a 5-day hourly forecast at approximately 50-km or 0.5-deg resolution. The global model is forced with NOAA/NCEP's Global Forecast System (GFS) winds. This model is designed to capture the large-scale ocean waves and provide spectral boundary conditions for the Hawaii regional WW3 model. While considerable effort has been made to implement all model components in a thorough, correct, and accurate manner, numerous sources of error are possible. As such, please use these data with the caution appropriate for any ocean related activity.";
    String testOutOfDate "now+105hours";
    String time_coverage_end "2018-09-26T09:00:00Z";
    String time_coverage_resolution "PT1H";
    String time_coverage_start "2010-11-07T21:00:00Z";
    String title "WaveWatch III (WW3) Global Wave Model";
    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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