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Dataset Title:  Connemara SWAN Wave Model   RSS
Institution:  Irish Marine Institute   (Dataset ID: IMI_CONNEMARA_SWAN_WAVE)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      265    1h 0m 0s (even)
  < slider >
 latitude (degrees_north) ?      440    0.001772727 (even)
  < slider >
 longitude (degrees_east) ?      640    0.002976563 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 significant_wave_height (m) ?
 sea_surface_swell_wave_significant_height (m) ?
 mean_wave_period_tm02 (s) ?
 peak_wave_period (tps, s) ?
 energy_period (tm-10, s) ?
 mean_wave_direction_from (deg) ?
 peak_wave_direction_from (deg) ?
 directional_spread (directional spreading, deg) ?
 orbital_velocity (orbital velocity near bottom, m/s) ?

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 1.7343072e+9, 1.7352576e+9;
    String axis "T";
    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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 52.95089447171561, 53.72912172247213;
    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 -10.79851171874996, -8.89648828124996;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  significant_wave_height {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "significant wave height";
    Float32 missing_value -32768.0;
    String standard_name "significant_wave_height";
    String units "m";
  }
  sea_surface_swell_wave_significant_height {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "significant wave height of swell part";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_swell_wave_significant_height";
    String units "m";
  }
  mean_wave_period_tm02 {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "tm02";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment";
    String units "s";
  }
  peak_wave_period {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "tps";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_wave_period_at_variance_spectral_density_maximum";
    String units "s";
  }
  energy_period {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "tm-10";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_wave_mean_period_from_variance_spectral_density_inverse_frequency_moment";
    String units "s";
  }
  mean_wave_direction_from {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "theta0";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_wave_from_direction";
    String units "deg";
  }
  peak_wave_direction_from {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "thetap";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_wave_from_direction_at_variance_spectral_density_maximum";
    String units "deg";
  }
  directional_spread {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "directional spreading";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_wave_directional_spread";
    String units "deg";
  }
  orbital_velocity {
    String colorBarMaximum "10";
    String colorBarMinimum "0";
    String colorBarPalette "KT_amp";
    String coordinates "time latitude longitude";
    String ioos_category "Surface Waves";
    String long_name "orbital velocity near bottom";
    Float32 missing_value -32768.0;
    String standard_name "sea_surface_wave_orbital_velocity_near_bottom";
    String units "m/s";
  }
  NC_GLOBAL {
    String CDI "Climate Data Interface version 1.9.10 (https://mpimet.mpg.de/cdi)";
    String cdm_data_type "Grid";
    String CDO "Climate Data Operators version 1.9.10 (https://mpimet.mpg.de/cdo)";
    String Directional_convention "meteorological";
    Float64 Easternmost_Easting -8.89648828124996;
    Float64 geospatial_lat_max 53.72912172247213;
    Float64 geospatial_lat_min 52.95089447171561;
    Float64 geospatial_lat_resolution 0.0017727272226800055;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -8.89648828124996;
    Float64 geospatial_lon_min -10.79851171874996;
    Float64 geospatial_lon_resolution 0.002976562500000001;
    String geospatial_lon_units "degrees_east";
    String history 
"Sat Dec 21 09:47:41 2024: cdo -seltimestep,145/168 /home/SWAN/OUTPUT/connemara/FC/conn_spatial.nc /home/SWAN/OUTPUT/connemara/FC/DAILY/connemara_20241226.nc
2024-12-22T07:17:20Z http://thredds.marine.ie/thredds/dodsC/IMI_SWAN_CONNEMARA/AGGREGATE
2024-12-22T07:17:20Z https://erddap.marine.ie/erddap/griddap/IMI_CONNEMARA_SWAN_WAVE.das";
    String infoUrl "na";
    String institution "Irish Marine Institute";
    String license "Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/)";
    Float64 Northernmost_Northing 53.72912172247213;
    String project "Connemara Wave";
    String run "1";
    String sourceUrl "http://thredds.marine.ie/thredds/dodsC/IMI_SWAN_CONNEMARA/AGGREGATE";
    Float64 Southernmost_Northing 52.95089447171561;
    String summary "Wave model data";
    String time_coverage_end "2024-12-27T00:00:00Z";
    String time_coverage_start "2024-12-16T00:00:00Z";
    String title "Connemara SWAN Wave Model";
    Float64 Westernmost_Easting -10.79851171874996;
  }
}

 

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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