RESPONSE OF TROPICAL ATMOSPHERIC CIRCULATION TO THE OCEAN-LAND SURFACE HEATING——AN ANALYTICAL SIMULATION

A linear steady model is constructed to investigate the response of the tropical atmosphere to diabaticheating.The basic equations are similar to those used by Gill(1980),but the long-wave approximationis removed and periodic boundary conditions are taken in longitude.According to the features of theunderlying surface temperature(including oceans and land),the heat sources(sinks)are given.Using thisanalytical model,we have simulated the climatological fields of wind and air pressure in the lower layersof the tropical and subtropical atmosphere in summer(June—August)and winter(December—February).The main features of observations are depicted in simulated fields.