NCEP/NCAR Reanalysis Monthly Mean Subsets (from DS090.0), 1948-continuing

The monthly means of NCEP/NCAR Reanalysis (R1) products, archived in ds090.0 dataset, are extracted and reorganized into subgroups in this dataset. The groupings try to combine like and/or commonly used parameter-level data together. There are also subgroups for each of the four diurnal monthly means (means of 00Z, 06Z, 12Z, and 18Z separately).

The data files are in WMO GRIB format. Both the monthly means
and their variances are in the same file but in different GRIB
records. Examples of separating monthly means from variances
are shown in this guide.

All subgroups will be available on line under data.
The ones that are not on line yet will be moved over upon
request.

To Access Resource:

Questions? Email Resource Support Contact:

  • datahelp@ucar.edu

Temporal Range

  • Begin:  1948-01-01T0000+00
    End:  2025-01-01T0600+00

Keywords

Resource Type dataset
Temporal Range Begin 1948-01-01T0000+00
Temporal Range End 2025-01-01T0600+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 2.5 degree
1.875 degree
Related Links N/A
Additional Information N/A
Resource Format WMO GRIB1
Standardized Resource Format GRIB
Asset Size 52364.943 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 National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Publisher NSF National Center for Atmospheric Research
Publication Date 1996-02-07
Digital Object Identifier (DOI) https://doi.org/10.5065/4Z6T-J350
Alternate Identifier d090002
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress onGoing
Metadata Date 2025-10-09T01:19:39Z
Metadata Record Identifier edu.ucar.gdex::d090002
Metadata Language eng; USA
Suggested Citation National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce. (1996). NCEP/NCAR Reanalysis Monthly Mean Subsets (from DS090.0), 1948-continuing. NSF National Center for Atmospheric Research. https://doi.org/10.5065/4Z6T-J350. Accessed 12 October 2025.

Harvest Source