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Initialization of a mesoscale model for April 10, 1979, using alternative data sourcesA 35 km grid limited area mesoscale model was initialized with high density SESAME radiosonde data and high density TIROS-N satellite temperature profiles for April 10, 1979. These data sources were used individually and with low level wind fields constructed from surface wind observations. The primary objective was to examine the use of satellite temperature data for initializing a mesoscale model by comparing the forecast results with similar experiments employing radiosonde data. The impact of observed low level winds on the model forecasts was also investigated with experiments varying the method of insertion. All forecasts were compared with each other and with mesoscale observations for precipitation, mass and wind structure. Several forecasts produced convective precipitation systems with characteristics satisfying criteria for a mesoscale convective complex. High density satellite temperature data and balanced winds can be used in a mesoscale model to produce forecasts which verify favorably with observations.
Document ID
19840026744
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Kalb, M. W. (Universities Space Research Association Columbia, MD, United States)
Date Acquired
September 4, 2013
Publication Date
August 1, 1984
Publication Information
Publisher: NASA
Subject Category
Meteorology And Climatology
Report/Patent Number
NAS 1.26:3826
NASA-CR-3826
Accession Number
84N34815
Funding Number(s)
CONTRACT_GRANT: NAS8-34767
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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