Accession Number : AD0680838

Title :   THE INTERACTION BETWEEN BASIC CURRENT AND DISTURBANCES IN A BAROCLINIC ATMOSPHERE,

Corporate Author : EMMANUEL COLL BOSTON MASS ORIENTAL SCIENCE RESEARCH LIBRARY

Personal Author(s) : Chen Yung-San,

Report Date : NOV 1968

Pagination or Media Count : 24

Abstract : The vorticity and adiabatic equations are converted into a set of nonlinear ordinary differential equations, the integration of which is performed on a computer using the Runge-Kutta method. The results show that the basic current and the disturbances constrain each other, that the basic current alters quasi-periodically with periods of 10 to 13 days, and that the rate of change of basic current in each cycle is quite different. The disturbances of wave number six vary sinusoidally with a period of 11 to 13 days; the evolution of the disturbances of wave number four is complicated, and the disturbances of wave number two have a period of variation of about three days. The disturbances of wave number six develop or damp at the upper and lower levels simultaneously but the case is opposite for those of wave number four or two. The results also show that for nonlinear equations, the solution using different initial values contains different mean periods of index cycles. (Author)

Descriptors :   (*WEATHER FORECASTING, *ATMOSPHERE MODELS), (*ATMOSPHERIC MOTION, NUMERICAL METHODS AND PROCEDURES), ADIABATIC GAS FLOW, VORTICES, NONLINEAR DIFFERENTIAL EQUATIONS, PERIODIC VARIATIONS, PERTURBATION THEORY, CHINA

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE