夏季季风区气候的模拟特征

用一个由大气模式、土壤模式和水域模式三个子模式组成的模式模拟了夏季风区的气候特征。模拟得到的平均气候特征,如温度场、风场、降水和蒸发场均与实际观测场接近;模式模拟出季风区的地面气候特征,表明其与大气状态和下垫面性质关系密切;对加热场的模拟则表明,积云对流凝结潜热加热对总加热率的贡献最大.

SIMULATED PROPERTIES OF THE CLIMATE IN THE SUMMER MONSOON AREA

A modified and improved primitive equation model with p-sigma incorporated vertical coordinates is used to simulate the climate properties in the summer monsoon area.The model includes various diabatic physical processes and the effects of the large scale topography and 6 kinds of underlying surfaces.Detailed discussions are made on the simulated mean fields of pressure, flow, precipitation and evaporation, soil temperature and moisture, and the diabatic heating fields.The results show that the simulated mean climate properties in the summer monsoon area are quite similar to the observed ones.The model simulated the surface climate, too, and shows that the surface climate characteristics are closely related to the atmospheric states and the physical properties of the underlying surfaces.The simulated heating fields show that the heating due to the cumulus convective condensation has the most important contribution to the total heating field.