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ERDDAP > griddap > Data Access Form ?

Dataset Title:  Galway Bay surface currents forecast   RSS
Institution:  Marine Institute   (Dataset ID: galway_bay_surface_forecast)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      72    1h 0m 0s (even)
  < slider >
 latitude (degrees_north) ?      283    5.929092E-4 (uneven)
  < slider >
 longitude (degrees_east) ?      336    9.897177E-4 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 sea_surface_height (metre) ?
 v_surface (surface v-momentum component, metre per second) ?
 u_surface (surface u-momentum component, metre per second) ?

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 1.7212644e+9, 1.72152e+9;
    String axis "T";
    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 53.11338043873049, 53.28058082541655;
    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 -9.21200390624999, -8.880448468844737;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sea_surface_height {
    Float64 _FillValue -9999.0;
    Float64 colorBarMaximum 2.0;
    Float64 colorBarMinimum -2.0;
    String ioos_category "Sea Level";
    String long_name "sea surface height";
    String standard_name "sea_surface_height";
    String time "time";
    String units "metre";
  }
  v_surface {
    Float64 _FillValue -9999.0;
    Float64 colorBarMaximum 0.3;
    Float64 colorBarMinimum -0.3;
    String ioos_category "Currents";
    String long_name "surface v-momentum component";
    String time "time";
    String units "metre per second";
  }
  u_surface {
    Float64 _FillValue -9999.0;
    Float64 colorBarMaximum 0.3;
    Float64 colorBarMinimum -0.3;
    String ioos_category "Currents";
    String long_name "surface u-momentum component";
    String time "time";
    String units "metre per second";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    Float64 Easternmost_Easting -8.880448468844737;
    Float64 geospatial_lat_max 53.28058082541655;
    Float64 geospatial_lat_min 53.11338043873049;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -8.880448468844737;
    Float64 geospatial_lon_min -9.21200390624999;
    Float64 geospatial_lon_resolution 9.897177235977707e-4;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-07-19T00:13:00Z (local files)
2024-07-19T00:13:00Z https://erddap.marine.ie/erddap/griddap/galway_bay_surface_forecast.das";
    String infoUrl "https://www.marine.ie/site-area/data-services/marine-forecasts/ocean-forecasts";
    String institution "Marine Institute";
    String keywords "component, currents, data, earth, Earth Science > Oceans > Sea Surface Topography > Sea Surface Height, height, latitude, level, local, longitude, momentum, ocean, oceans, science, sea, sea level, sea_surface_height, source, ssh, surface, time, topography, u-momentum, u_surface, v-momentum, v_surface";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/)";
    Float64 Northernmost_Northing 53.28058082541655;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 53.11338043873049;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Data from a hydrodynamic model";
    String testOutOfDate "now+1day";
    String time_coverage_end "2024-07-21T00:00:00Z";
    String time_coverage_start "2024-07-18T01:00:00Z";
    String title "Galway Bay surface currents forecast";
    Float64 Westernmost_Easting -9.21200390624999;
  }
}

 

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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