Simulation of the Evolution of Summer Monsoon Rainbelts over Eastern China from Regional Climate Model
区域气候模式对中国东部季风雨带演变的模拟

This paper presents the results of simulating the evolution of 5-day or 10-day mean summer monsoon rainbelts over the eastern China based on the regional climate modeling experiments which include a normal monsoon year (1979) and a wet monsoon year (1991) (driven by observational analysis), and a continuous 3-year integration driven by GCM outputs In comparison with the observed precipitation fields, the model has shown its capacity to generally catch up the location of main rainbelts and to reproduce the major characteristics of their evolution; better than those simulated from GCMs However, the simulated rainbelts do not always exactly coincide with the observed ones In some pentads or decades, there are significant differences between model simulations and observations The total correlation coefficients between observed and simulated precipitation are less than 0 40 The obove results indicate that the parameterization schemes of main physical processes in the regional climate model need to be further improved when applied to East Asia monsoon regions