Evaluation and Analysis of RegCM3 Simulated Summer Rainfall over the Huaihe River Basin of China  

作　　者：宗培书 王会军 

机构地区：[1]Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences

出　　处：《Acta meteorologica Sinica》2011年第3期386-394,共9页

基　　金：Supported by the National Basic Research Program of China(2009CB421406);National Natural Science Foundation of China(40875048 and 40631005);Knowledge Innovation Project of the Chinese Academy of Sciences(KZCX2-YW-Q1-02)

摘　　要：This study evaluates the ability of the Abdus Salam International Center for Theoretical Physics （ICTP） version 3 Regional Climate Model （RegCM3） in simulating the summer rainfall amount and distribution and large-scale circulation over the Huaihe River basin of China. We conducted the simulation for the period of 1982-2001 and the wet year of 2003 to test the ensemble simulation capacity of RegCM3. First, by comparing the simulated rainfall amount and distribution against the observations, it is found that RegCM3 can reproduce the rainfall pattern and its annual variations. In addition, the simulated spatial patterns of 850-hPa wind and specific humidity fields are close to the observations, although the wind speed and humidity values are larger. Finally, the ensemble simulation of RegCM3 for summer 2003 failed to capture the spatial distribution and underestimated the magnitude of the precipitation anomalies, and the reasons are analyzed.This study evaluates the ability of the Abdus Salam International Center for Theoretical Physics （ICTP） version 3 Regional Climate Model （RegCM3） in simulating the summer rainfall amount and distribution and large-scale circulation over the Huaihe River basin of China. We conducted the simulation for the period of 1982-2001 and the wet year of 2003 to test the ensemble simulation capacity of RegCM3. First, by comparing the simulated rainfall amount and distribution against the observations, it is found that RegCM3 can reproduce the rainfall pattern and its annual variations. In addition, the simulated spatial patterns of 850-hPa wind and specific humidity fields are close to the observations, although the wind speed and humidity values are larger. Finally, the ensemble simulation of RegCM3 for summer 2003 failed to capture the spatial distribution and underestimated the magnitude of the precipitation anomalies, and the reasons are analyzed.

关 键 词：regional climate model the Huaihe River basin PRECIPITATION ensemble simulation 

分 类 号：P467[天文地球—大气科学及气象学]