NMC Global Tropospheric Analyses, tropopause subset

NCEP Global Tropospheric Analyses on 2.5 degree grids, one for each hemisphere, from 1 July 1976 to 12 April 1997. The Flattery analysis method was used through 21 September 1978. It forced a relationship between heights and winds which causes the zonal mean meridional wind at every level to be zero. This also caused other problems with winds in equatorial areas. The optimal analysis (OI) method (12 layer) started on 22 September 1978. In April 1985 the Medium Range Forecast (MRF) model started, with 18 layers. Analyses include geopotential height, temperature, wind (u- and v-components) and potential temperature. In more recent years the temperature analyses are derived from thickness temperatures.

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Temporal Range

  • Begin:  1976-07-01T0000+00
    End:  1996-08-27T1200+00

Keywords

Resource Type dataset
Temporal Range Begin 1976-07-01T0000+00
Temporal Range End 1996-08-27T1200+00
Temporal Resolution N/A
Bounding Box North Lat N/A
Bounding Box South Lat N/A
Bounding Box West Long N/A
Bounding Box East Long N/A
Spatial Representation N/A
Spatial Resolution N/A
Related Links N/A
Additional Information N/A
Resource Format NCEP ON84
Standardized Resource Format OTHER
Asset Size 610.578 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 1993-12-01
Digital Object Identifier (DOI) https://doi.org/10.5065/8X18-Z644
Alternate Identifier d082002
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-09T01:19:27Z
Metadata Record Identifier edu.ucar.gdex::d082002
Metadata Language eng; USA
Suggested Citation National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce. (1993). NMC Global Tropospheric Analyses, tropopause subset. NSF National Center for Atmospheric Research. https://doi.org/10.5065/8X18-Z644. Accessed 12 October 2025.

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