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ERDDAP > griddap > Make A Graph ?

Dataset Title:  RTOFS Forecast, 2D, 3-Hourly Prognostic, Global, Latest Model Run, today -
today+8days
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Institution:  NOAA NCEP   (Dataset ID: ncepRtofsG2DFore3hrlyProg)
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 →
    << -
< <
level (millibar) ?     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:   Ascending: 
 
(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 1.5267744e+9, 1.5274656e+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";
  }
  level {
    Float64 actual_range 1.0, 1.0;
    String axis "Z";
    String ioos_category "Pressure";
    String long_name "Level";
    String units "millibar";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -90.0, 89.90947;
    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 74.16, 434.06227;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sst {
    Float32 _FillValue 1.26765e+30;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    Float32 missing_value 1.26765e+30;
    String standard_name "sea_surface_temperature";
    String units "degree_C";
  }
  sss {
    Float32 _FillValue 1.26765e+30;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String ioos_category "Salinity";
    String long_name "Sea Water Practical Salinity";
    Float32 missing_value 1.26765e+30;
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  u_velocity {
    Float32 _FillValue 1.26765e+30;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "Eastward Sea Water Velocity";
    Float32 missing_value 1.26765e+30;
    String standard_name "eastward_sea_water_velocity";
    String units "m s-1";
  }
  v_velocity {
    Float32 _FillValue 1.26765e+30;
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String ioos_category "Currents";
    String long_name "Northward Sea Water Velocity";
    Float32 missing_value 1.26765e+30;
    String standard_name "northward_sea_water_velocity";
    String units "m s-1";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "NOAA NCEP";
    String creator_type "institution";
    String creator_url "http://polar.ncep.noaa.gov/global/";
    Float64 Easternmost_Easting 434.06227;
    Float64 geospatial_lat_max 89.90947;
    Float64 geospatial_lat_min -90.0;
    Float64 geospatial_lat_resolution 0.08333;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 434.06227;
    Float64 geospatial_lon_min 74.16;
    Float64 geospatial_lon_resolution 0.08333000000000002;
    String geospatial_lon_units "degrees_east";
    String history 
"Mon May 21 18:37:29 UTC 2018 : imported by GrADS Data Server 2.0
2018-05-22T08:25:16Z http://nomads.ncep.noaa.gov/dods/rtofs/rtofs_global20180521/rtofs_glo_2ds_forecast_3hrly_prog
2018-05-22T08:25:16Z http://coastwatch.pfeg.noaa.gov/griddap/ncepRtofsG2DFore3hrlyProg.das";
    String infoUrl "http://polar.ncep.noaa.gov/global/";
    String institution "NOAA NCEP";
    String keywords "centers, circulation, currents, daily, density, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, Earth Science > Oceans > Salinity/Density > Salinity, eastward, eastward_sea_water_velocity, eddy, environmental, forecast, global, hourly, hycom, meridional, model, modeling, national, ncep, noaa, northward, northward_sea_water_velocity, nowcast, ocean, oceans, operational, prediction, real-time, resolving, rtofs, salinity, sea, sea_surface_salinity, sea_surface_temperature, sea_water_practical_salinity, sea_water_temperature, seawater, service, surface, system, temperature, velocity, water, weather, zonal";
    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, ERD, NOAA, 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.";
    Float64 Northernmost_Northing 89.90947;
    String sourceUrl "http://nomads.ncep.noaa.gov/dods/rtofs/rtofs_global20180521/rtofs_glo_2ds_forecast_3hrly_prog";
    Float64 Southernmost_Northing -90.0;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "The global operational Real-Time Ocean Forecast System (Global RTOFS) at the NOAA National Centers for Environmental Prediction is based on an eddy resolving 1/12° global HYCOM (HYbrid Coordinates Ocean Model) and is part of a larger national backbone capability of ocean modeling at the National Weather Service in a strong partnership with the US Navy.";
    String testOutOfDate "now+132hours";
    String time_coverage_end "2018-05-28T00:00:00Z";
    String time_coverage_start "2018-05-20T00:00:00Z";
    String title "RTOFS Forecast, 2D, 3-Hourly Prognostic, Global, Latest Model Run, today - today+8days";
    Float64 Westernmost_Easting 74.16;
  }
}

 

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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