Accession Number : AD0854893

Title :   Objective and Dynamic Analyses of Tropical Weather.

Descriptive Note : Semiannual rept. no. 2, 18 Sep 68-18 Mar 69,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : Mancuso,Robert L. ; Endlich,Roy M.

Report Date : JUN 1969

Pagination or Media Count : 55

Abstract : Various approaches were tested for deriving wind information from satellite cloud photographs made by the ATS-3 satellite. Approaches tested included: estimating a wind-vector field from cloud-motion measurements; altering the kinematic properties (divergence and vorticity) to fit cloud distributions; and estimating wind speeds from satellite-derived wind direction. All these schemes gave wind fields that were in reasonable agreement with the available station winds and provided excellent background fields for analyzing the station data. A multilayer baroclinic model was developed for the purpose of making shortrange tropical forecasts. The model is based primarily on the vorticity equation and is designed to operate on the actual wind fields rather than the pressure and temperature fields. At present, testing of the model has been restricted to considerations of internal consistency and to comparisons with barotropic forecasts. Preliminary objective analyses were performed using available rawinsonde data over Southeast Asia in order to test the applicability of objective analyses and forecasting techniques in this area. (Author)

Descriptors :   (*WEATHER FORECASTING, TROPICAL REGIONS), (*ATMOSPHERIC MOTION, AERIAL RECONNAISSANCE), METEOROLOGICAL SATELLITES, AERIAL PHOTOGRAPHS, WIND, CLOUDS, DATA PROCESSING, UPPER ATMOSPHERE, SOUTHEAST ASIA

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE