Accession Number : AD0616745

Title :   RELATIONSHIPS BETWEEN TROPICAL PRECIPITATION AND KINEMATIC CLOUD MODELS.

Descriptive Note : Rept. no. 7 (Final), for 1 May 62-31 Jan 65,

Corporate Author : TRAVELERS RESEARCH CENTER INC HARTFORD CONN

Personal Author(s) : Arnason,Geirmundur ; newburg,Edward A.

Report Date : JUN 1965

Pagination or Media Count : 39

Abstract : A discussion of the work done with two kinematic models, both of which contain the bulk effects of microphysics of cloud and precipitation, is given. Of these two models, the first is one-dimensional and approximates conditions in the core of a precipitating cloud. The second model has a two-dimensional motion field and is therefore capable of a more realistic picture of cloud and precipitation development in a convective system. The effects of the most important cloud physics parameters upon cloud formation and precipitation rates are discussed. A brief account of work done with dynamic models including realistic thermodynamic processes, is given. Because this work is barely beyond its formulation and planning stages, the only result at hand is that of a perturbation pressure field associated with a small buoyant thermal bubble introduced at initial time. As expected, the pressure perturbation is essentially nonhydrostatic owing to the predominance of vertical accelerations. (Author)

Descriptors :   (*ATMOSPHERIC PRECIPITATION, TROPICAL REGIONS), (*ATMOSPHERE MODELS, METEOROLOGICAL PHENOMENA), CLOUDS, DYNAMICS, CONVECTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE