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Dataset Title:  RTOFS Nowcast, 3D, 6-Hourly, Region 2 (US West), Latest Model Run, today-
2days - today
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Institution:  NOAA NCEP   (Dataset ID: ncepRtofsG3DNow6hrlyR2)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      5    6h 0m 0s (even)
  < slider >
 level (millibar) ?      40    128.2051 (uneven)
  < slider >
 latitude (degrees_north) ?      1600    0.038 (even)
  < slider >
 longitude (degrees_east) ?      1000    0.08 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 temperature (Sea Water Potential Temperature, degree_C) ?
 salinity (Sea Water Practical Salinity, PSU) ?
 u (Eastward Sea Water Velocity, m s-1) ?
 v (Northward Sea Water Velocity, m s-1) ?

File type: (more information)

(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 1.7114976e+9, 1.711584e+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 0.0, 5000.0;
    String axis "Z";
    String ioos_category "Pressure";
    String long_name "Level";
    String units "millibar";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 10.0, 70.762;
    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 -157.9, -77.98;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  temperature {
    Float32 _FillValue 1.26765e+30;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "Sea Water Potential Temperature";
    Float32 missing_value 1.26765e+30;
    String standard_name "sea_water_potential_temperature";
    String units "degree_C";
  }
  salinity {
    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 {
    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 {
    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 "https://polar.ncep.noaa.gov/global/";
    String defaultDataQuery "temperature[last][0][0:last][0:last],salinity[last][0][0:last][0:last],u[last][0][0:last][0:last],v[last][0][0:last][0:last]";
    String defaultGraphQuery "temperature[last][0][0:last][0:last]&.draw=surface&.vars=longitude|latitude|temperature";
    Float64 Easternmost_Easting -77.98;
    Float64 geospatial_lat_max 70.762;
    Float64 geospatial_lat_min 10.0;
    Float64 geospatial_lat_resolution 0.038;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -77.98;
    Float64 geospatial_lon_min -157.9;
    Float64 geospatial_lon_resolution 0.08;
    String geospatial_lon_units "degrees_east";
    String history 
"Thu Mar 28 03:24:03 UTC 2024 : imported by GrADS Data Server 2.0
2024-03-28T23:10:25Z https://nomads.ncep.noaa.gov/dods/rtofs/rtofs_global20240328/rtofs_glo_3dz_nowcast_6hrly_us_west
2024-03-28T23:10:25Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/ncepRtofsG3DNow6hrlyR2.das";
    String infoUrl "https://polar.ncep.noaa.gov/global/";
    String institution "NOAA NCEP";
    String keywords "6hrly, centers, circulation, currents, density, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Temperature > Potential Temperature, Earth Science > Oceans > Salinity/Density > Salinity, eastward, eastward_sea_water_velocity, eddy, environmental, global, hourly, hycom, meridional, model, modeling, national, ncep, noaa, northward, northward_sea_water_velocity, nowcast, ocean, oceans, operational, potential, prediction, real-time, region, resolving, rtofs, salinity, sea, sea_water_potential_temperature, sea_water_practical_salinity, sea_water_temperature, seawater, service, system, temperature, velocity, volume, 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 70.762;
    String sourceUrl "https://nomads.ncep.noaa.gov/dods/rtofs/rtofs_global20240328/rtofs_glo_3dz_nowcast_6hrly_us_west";
    Float64 Southernmost_Northing 10.0;
    String standard_name_vocabulary "CF Standard Name Table v70";
    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-36hours";
    String time_coverage_end "2024-03-28T00:00:00Z";
    String time_coverage_start "2024-03-27T00:00:00Z";
    String title "RTOFS Nowcast, 3D, 6-Hourly, Region 2 (US West), Latest Model Run, today-2days - today";
    Float64 Westernmost_Easting -157.9;
  }
}

 

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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