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ERDDAP > griddap > Make A Graph ?

Dataset Title:  NOAA/NCEP Global Forecast System (GFS) Atmospheric Model Subscribe RSS
Institution:  NOAA NCEP   (Dataset ID: NCEP_Global_Best)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
Graph Type:  ?
X Axis:  ?
Y Axis:  ?
Color:  ?
 
Dimensions ?    Start ?    Stop ?
time (UTC) ?     specify just 1 value →
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< <
latitude (degrees_north) ?
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< slider >
longitude (degrees_east) ?
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< slider >
 
Graph Settings
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   Ascending: 
 
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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 1.3046832e+9, 1.524744e+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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -90.0, 90.0;
    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 0.0, 359.5;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  tmpsfc {
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 303.0;
    Float64 colorBarMinimum 223.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Temperature";
    String long_name "surface air temperature";
    Float64 missing_value -9.99e+8;
    String standard_name "surface_temperature";
    String units "K";
  }
  tmp2m {
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 303.0;
    Float64 colorBarMinimum 223.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Temperature";
    String long_name "air temperature at 2m";
    Float64 missing_value -9.99e+8;
    String standard_name "air_temperature";
    String units "K";
  }
  ugrd10m {
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum -20.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Wind";
    String long_name "eastward wind velocity at 10m";
    Float64 missing_value -9.99e+8;
    String standard_name "eastward_wind";
    String units "m s-1";
  }
  vgrd10m {
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 20.0;
    Float64 colorBarMinimum -20.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Wind";
    String long_name "northward wind velocity at 10m";
    Float64 missing_value -9.99e+8;
    String standard_name "northward_wind";
    String units "m s-1";
  }
  pratesfc {
    Float64 _FillValue -9.99e+8;
    Float32 colorBarMaximum 0.005;
    Float32 colorBarMinimum 0.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Meteorology";
    String long_name "rainfall rate";
    Float64 missing_value -9.99e+8;
    String standard_name "precipitation_flux";
    String units "kg m-2 s-1";
  }
  rh2m {
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Meteorology";
    String long_name "relative humidity at 2m";
    Float64 missing_value -9.99e+8;
    String standard_name "relative_humidity";
    String units "%";
  }
  prmslmsl {
    String _CoordinateAxisType "Pressure";
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 102500.0;
    Float64 colorBarMinimum 62500.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Pressure";
    String long_name "mean sea level pressure";
    Float64 missing_value -9.99e+8;
    String standard_name "air_pressure_at_sea_level";
    String units "Pa";
  }
  dlwrfsfc {
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum 50.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Meteorology";
    String long_name "net downward longwave radiation flux";
    Float64 missing_value -9.99e+8;
    String standard_name "surface_net_downward_longwave_flux";
    String units "W m-2";
  }
  dswrfsfc {
    Float64 _FillValue -9.99e+8;
    Float64 colorBarMaximum 1200.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time_run time latitude longitude";
    String ioos_category "Meteorology";
    String long_name "net downward shortwave radiation flux";
    Float64 missing_value -9.99e+8;
    String standard_name "surface_net_downward_shortwave_flux";
    String units "W m-2";
  }
  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 contributor_name "Jim Potemra";
    String contributor_role "distributor";
    String Conventions "CF-1.6, ACDD-1.3";
    String creator_email "NCEP.List.PMB-Dataflow@noaa.gov";
    String creator_institution "NOAA National Centers for Environmental Prediction (NCEP)";
    String creator_name "NOAA National Centers for Environmental Prediction (NCEP)";
    String creator_type "institution";
    String creator_url "http://www.ncep.noaa.gov";
    String date_created "2011-06-02";
    String date_issued "2011-06-02";
    String date_metadata_modified "2017-01-30";
    String date_modified "2014-06-23";
    String drawLandMask "under";
    Float64 Easternmost_Easting 359.5;
    String geospatial_bounds "POLYGON ((-90.0 -180.0, 90.0 -180.0, 90.0 180.0, -90.0 180.0, -90.0 -180.0))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 90.0;
    Float64 geospatial_lat_min -90.0;
    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 
"Subset 0.5-deg NCEP GFS daily from nomads server via OPeNDAP and NCO (06/2011) ;
FMRC Best Dataset
2018-04-22T14:08:32Z http://localhost:8080/thredds/dodsC/hioos/model/atm/ncep_global/NCEP_Global_Atmospheric_Model_best.ncd
2018-04-22T14:08:32Z http://coastwatch.pfeg.noaa.gov/griddap/NCEP_Global_Best.das";
    String id "ncep_global";
    String infoUrl "http://www.nco.ncep.noaa.gov/pmb/products/gfs/";
    String institution "NOAA NCEP";
    String instrument "Not Applicable > Not Applicable";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "climatologyMeteorologyAtmosphere";
    String keywords "Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation, Earth Science > Atmosphere > Atmospheric Radiation > Shortwave Radiation, Earth Science > Atmosphere > Atmospheric Temperature > Surface Air Temperature, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Atmosphere > Precipitation > Rain, 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:NCEP_Global_Atmospheric_Model";
    String locations "Geographic Region > Global Ocean";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/ncep_global.html";
    String naming_authority "org.pacioos";
    String NCO "4.2.0";
    Float64 Northernmost_Northing 90.0;
    String platform "Models/Analyses > > NCEP-GFS > NCEP Global Forecast System, 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.nco.ncep.noaa.gov/pmb/products/gfs/";
    String source "NOAA/NCEP Global Forecast System (GFS) numerical weather prediction model";
    String sourceUrl "http://localhost:8080/thredds/dodsC/hioos/model/atm/ncep_global/NCEP_Global_Atmospheric_Model_best.ncd";
    Float64 Southernmost_Northing -90.0;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary "U.S. National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) numerical weather prediction model 8-day, 3-hourly forecast for the globe at approximately 50-km or 0.5-deg resolution.";
    String testOutOfDate "now+136hours";
    String time_coverage_end "2018-04-26T12:00:00Z";
    String time_coverage_resolution "PT3H";
    String time_coverage_start "2011-05-06T12:00:00Z";
    String title "NOAA/NCEP Global Forecast System (GFS) Atmospheric 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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