Comparisons on RIEMS2.0's Ability to Simulate Multi-Year Mean Climate in Northern China with Two Model Domains  

作　　者：ZHAO De-Ming FU Cong-Bin 

机构地区：[1]Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy ofSciences, Beijing 100029, China

出　　处：《Atmospheric and Oceanic Science Letters》2009年第6期386-391,共6页大气和海洋科学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 40975053);the National Basic Research Program of China (Grant No. 2006CB400500)

摘　　要：Regional Integrated Environment Modeling System Version 2.0 (RIEMS2.0) is now being developed by the Key Laboratory of Regional Climate-Environment for Temperate East Asia, Chinese Academy of Sciences. In order to test the sensitivity of the RIEMS2.0 model domain to simulate long-term climate and its change, and provide a basis for the further development and application of the model, the authors compared results between simulated and observed precipitation and surface-airtemperature using two model domains under different cumulus parameterization schemes. The model was driven by NCEP/NCAR re-analysis data with a simulation duration ranging from 1 January 1979 to 31 December 2007. There were no significant differences found in the spatial distributions of the simulated precipitation and surface-air-temperature, or interannual variations between the two model domains. There were, however, differences observed between the two model domain simulations of local sub-regions. The smaller model domain more accurately simulated precipitation, especially in summer (June, July, and August), and decreased the bias of surface-airtemperature, especially in winter (December, January, and February). The weak summer and winter monsoons simulated by the smaller model domain was a result of boundary forcings and may partially account for the improvements of this model.Regional Integrated Environment Modeling System Version 2.0 （RIEMS2.0） is now being developed by the Key Laboratory of Regional Climate-Environment for Temperate East Asia, Chinese Academy of Sciences. In order to test the sensitivity of the RIEMS2.0 model domain to simulate long-term climate and its change, and provide a basis for the further development and application of the model, the authors compared results between simulated and observed precipitation and surface-airtemperature using two model domains under different cumulus parameterization schemes. The model was driven by NCEP/NCAR re-analysis data with a simulation duration ranging from 1 January 1979 to 31 December 2007. There were no significant differences found in the spatial distributions of the simulated precipitation and surface-air-temperature, or interannual variations between the two model domains. There were, however, differences observed between the two model domain simulations of local sub-regions. The smaller model domain more accurately simulated precipitation, especially in summer （June, July, and August）, and decreased the bias of surface-airtemperature, especially in winter （December, January, and February）. The weak summer and winter monsoons simulated by the smaller model domain was a result of boundary forcings and may partially account for the improvements of this model.

关 键 词：RIEMS2.0 PRECIPITATION surface-airtemperature DOMAIN sensitivity improvement 

分 类 号：P467[天文地球—大气科学及气象学] Q948.158[生物学—植物学]