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Optimum employment of satellite indirect soundings as numerical model inputThe characteristics of satellite-derived temperature soundings that would significantly affect their use as input for numerical weather prediction models were examined. Independent evaluations of satellite soundings were emphasized to better define error characteristics. Results of a Nimbus-6 sounding study reveal an underestimation of the strength of synoptic scale troughs and ridges, and associated gradients in isobaric height and temperature fields. The most significant errors occurred near the Earth's surface and the tropopause. Soundings from the TIROS-N and NOAA-6 satellites were also evaluated. Results again showed an underestimation of upper level trough amplitudes leading to weaker thermal gradient depictions in satellite-only fields. These errors show a definite correlation to the synoptic flow patterns. In a satellite-only analysis used to initialize a numerical model forecast, it was found that these synoptically correlated errors were retained in the forecast sequence.
Document ID
19820011894
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Horn, L. H. (Wisconsin Univ. Madison, WI, United States)
Derber, J. C. (Wisconsin Univ. Madison, WI, United States)
Koehler, T. L. (Wisconsin Univ. Madison, WI, United States)
Schmidt, B. D. (Wisconsin Univ. Madison, WI, United States)
Date Acquired
September 4, 2013
Publication Date
December 1, 1981
Subject Category
Meteorology And Climatology
Report/Patent Number
NASA-CR-168509
Accession Number
82N19768
Funding Number(s)
CONTRACT_GRANT: NSG-5252
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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