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NMC Global Tropospheric Analyses, tropopause subset

| DOI: 10.5065/8X18-Z644

This historical dataset is recommended for ancillary use only and not as a primary research dataset. It has likely been superseded by a newer, improved dataset.


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.

Temporal Range:
1976-07-01 00:00 +0000 to 1996-08-27 12:00 +0000
Data Contributors:
National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Trenberth, K.E., and J.G. Olson, 1988: Evaluation of NMC Global Analyses: 1979-1987. TN-299+STR, National Center for Atmospheric Research, 82 pp.

Total Volume:
610.58 MB
Data Formats:
More Details:
View a more detailed summary of the data, including specific date ranges and locations by parameter
Metadata Record:
Data License:
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