Accession Number : AD0680837

Title :   A NUMERICAL EXPERIMENT ON THE PROCESSES OF TOPOGRAPHIC PERTURBATIONS IN A BAROCLINIC ATMOSPHERE,

Corporate Author : EMMANUEL COLL BOSTON MASS ORIENTAL SCIENCE RESEARCH LIBRARY

Personal Author(s) : Zhu Yong-ti,

Report Date : NOV 1968

Pagination or Media Count : 17

Abstract : This report presents a numerical calculation by means of a three-level model of the distribution of zonal circulation of an ideal field under the influence of the processes of topographic perturbations for a time interval of 60 hours. The results reveal that the influence of topographic perturbations is characterized by a distinct time lag (it takes some 48 hours for the processes to attain a relatively stable state). On the other hand, the difluence of the banded flow around the Tibetan Plateau ('detouring' phenomenon) is significantly reflected in the calculated results. In the northern hemisphere, the positions of troughs and ridges induced by topography are basically concordant with those determined from the mean circulation pattern. This shows that realistic and appropriate boundary conditions have been included in the present study. (Author)

Descriptors :   (*WEATHER FORECASTING, ATMOSPHERE MODELS), (*ATMOSPHERIC MOTION, TERRAIN), PERTURBATION THEORY, BOUNDARY VALUE PROBLEMS, BAROMETRIC PRESSURE, ATMOSPHERIC TEMPERATURE, METEOROLOGICAL CHARTS, TERRAIN MODELS, CHINA

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE