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The impact of satellite soundings on the National Meteorological Center's Analysis and Forecast System - The data systems test resultsParallel analyses produced with (SAT) and without (NOSAT) the sounding data from the experimental Nimbus-6 and operational NOAA-4 satellites for two data system test periods have indicated that satellite soundings had little impact on forecast through 72 h over the Northern Hemisphere. The effect of remote temperature sounding was generally small and of inconsistent sign, i.e. beneficial in some cases, harmful in others. These positive and negative contributions averaged slightly positive for test period 6 and slightly negative for test period 5. Because of the inconsistency in sign, neither result is much of meteorological consequence. There were, however, systematic differences between the SAT and NOSAT mode analysis: the amplitude of weather systems was consistently less in the SAT mode. The reduced amplitude reflects a tendency for the satellite temperature retrievals to underestimate the spatial variance in the thermal structure of the atmosphere.
Document ID
19800054006
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Tracton, M. S.
(National Meteorological Center Washington, DC, United States)
Desmarais, A. J.
(National Meteorological Center Washington, DC, United States)
Van Haaren, R. J.
(National Meteorological Center Washington, DC, United States)
Mcpherson, R. D.
(NOAA, National Meteorological Center Washington, D.C., United States)
Date Acquired
August 10, 2013
Publication Date
May 1, 1980
Publication Information
Publication: Monthly Weather Review
Volume: 108
Subject Category
Meteorology And Climatology
Accession Number
80A38176
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-70252-AG
Distribution Limits
Public
Copyright
Other

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