Accession Number:

AD0608627

Title:

FURTHER INVESTIGATIONS OF NUMERICAL MODELS OF THE ATMOSPHERE BOUNDARY LAYER.

Descriptive Note:

Final rept.,

Corporate Author:

TRAVELERS RESEARCH CENTER INC HARTFORD CONN

Report Date:

1964-07-01

Pagination or Media Count:

110.0

Abstract:

In an extension of the work described in a previous report 13 TRC-7047-80 , a combined diffusion-surface heat balance model for the atmospheric planetary boundary layer has been programmed for numerical integration, and has undergone preliminary testing with data from seven six-hour test periods selected from the Great Plains observational program. The tests show that the inclusion of the surface heat exchange process eliminates the necessity for prespecification of a lower boundary temperature in order to obtain realistic predictions of temperature and wind trends in the presence of cloudiness. Some modifications of the present modeled maximum and minimum values of exchange coefficient are suggested by the results. Model equations for the computation of radiative flux divergence effects in the presence of boundary layer clouds have also been derived, and detailed specifications for the computer program prepared. Equations for the computation of the mean vertical velocity and three-dimensional advective change have been derived. The specifications for the computer program assume that the advection process is characterized by longer time periods of variation than the other modeled processes. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE