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Accession Number:
AD0623461
Title:
A PHYSICAL LOW-CLOUD PREDICTION MODEL
Corporate Author:
UNITED TECHNOLOGIES CORP HARTFORD CT
Report Date:
1965-10-01
Abstract:
Results of three 12-hour forecasts for different synoptic situations, computed with the model, are presented. Equations for the contact layer were derived for the forced convection, free convection, and strong inversion regimes. The requirement for upper boundary conditions is reduced only the geostrophic wind components and upper-level cloudiness are required from a free-air model. Empirical methods were developed for computing the instrument shelter level temperature and relative humidity. The eddy diffusion coefficient for heat and water is a function of the Richardson number throughout the boundary layer. The linear geostrophic wind shear within the boundary layer is computed from the predicted temperature. The model has not been thoroughly tested preliminary results suggest that, given a careful analysis of routine observational data, this boundary layer model will serve operationally- meaningful diagnostic and predictive functions. The logic used in constructing the computer program for the model is presented.
Descriptive Note:
Final rept. for Jan-Aug 1965
Supplementary Note:
Subcontracted to Travelers Research Center, Inc., Hartford, Conn., rept. no. 7463-182. DOI: 10.21236/AD0623461
Pages:
0154
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
AF 19(628)-3437
File Size:
23.26MB
