Historical Unidata Internet Data Distribution (IDD) Gridded Model Data

Historical Unidata Internet Data Distribution (IDD) Gridded Model Data are obtained via the Unidata Internet Data Distribution System (IDD). Data includes gridded analyses and forecasts from US National Centers for Environmental Prediction (NCEP) and European Centre for Medium-Range Weather Forecasts (ECMWF) models. Models include NCEP ETA, NAM and RUC covering the Continental US, NCEP Ensemble and GFS covering North America and the globe, and GFS Extended and ECMWF covering the globe, at various spatial and temporal resolutions. Potential variables found in the model output include pressure, relative humidity, temperature, geopotential height, zonal component wind speed, and V-component wind speed.

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Temporal Range

  • Begin:  2006-11-01T0000+00
    End:  2021-10-09T0600+00

Keywords

Resource Type dataset
Temporal Range Begin 2006-11-01T0000+00
Temporal Range End 2021-10-09T0600+00
Temporal Resolution N/A
Bounding Box North Lat 90.0
Bounding Box South Lat -90.0
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation grid
Spatial Resolution 0.5 degree
1 degree
20318.0 m
2.5 degree
12191.0 m
20317.0 m
Related Links

Related Resource #1 : NCEP model data archive.

Related Resource #2 : Unidata IDD homepage

Related Resource #3 : NCAR Command Language GRIB to NetCDF file structure description.

Related Resource #4 : NCEI model archive
Additional Information N/A
Resource Format WMO GRIB1
WMO GRIB2
Standardized Resource Format GRIB
Asset Size 45282.929 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email datahelp@ucar.edu
Resource Support Organization N/A
Distributor NSF NCAR Geoscience Data Exchange
Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author European Centre for Medium-Range Weather Forecasts
Unidata, University Corporation for Atmospheric Research
National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Publisher NSF National Center for Atmospheric Research
Publication Date 2003-10-31
Digital Object Identifier (DOI) https://doi.org/10.5065/549X-KE89
Alternate Identifier d335000
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress onGoing
Metadata Date 2025-10-09T01:18:36Z
Metadata Record Identifier edu.ucar.gdex::d335000
Metadata Language eng; USA
Suggested Citation European Centre for Medium-Range Weather Forecasts, Unidata, University Corporation for Atmospheric Research, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce. (2003). Historical Unidata Internet Data Distribution (IDD) Gridded Model Data. NSF National Center for Atmospheric Research. https://doi.org/10.5065/549X-KE89. Accessed 15 October 2025.

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