Accession Number : AD0616910

Title :   MESOMETEOROLOGICAL FIELD STUDIES.

Descriptive Note : Final rept. for 1 May 60-31 Jan 65,

Corporate Author : CHICAGO UNIV ILL

Personal Author(s) : Fujita,Tetsuya ; styber,Kenneth A. ; Brown,Rodger A. ; Bradbury,Dorothy L. ; Baralt,Gisela L.

Report Date : FEB 1965

Pagination or Media Count : 208

Abstract : The initial purpose of the Mesometeorological Field Study was to conduct mesometeorological measurements in and around the San Francisco Peaks, Flagstaff, Arizona during July 1960 and July and August 1961. These measurements consisted of wind, microbarograph, temperature, rain and hail gauges, and other quantities required to determine the properties of the environment during cumulus activity. Data reduction and analysis was conducted at the University of Chicago subsequent to the field measurements. A theoretical study is presented in which a set of equations is proposed for the evaluation of the exchange coefficients which will apply to a convective cloud since those used near the ground are not applicable near the level of convective activity. A detailed case study is described in which the equations derived above are applied to a specific case of a developing cumulonimbus cloud. A photogrammetric study of the growth of a cumulonimbus cloud led to a model of three concentric cylinder-like regions, each larger one being more influenced by turbulent mixing with the environment than the next smaller one.

Descriptors :   (*METEOROLOGY, ARIZONA), ATMOSPHERIC PRECIPITATION, CONVECTION, CUMULUS CLOUDS, AERIAL PHOTOGRAPHY, ATMOSPHERIC MOTION, ATMOSPHERIC SOUNDING

Distribution Statement : APPROVED FOR PUBLIC RELEASE