RegCM3对中国区域气候模拟的敏感性试验  

Sensitivity Experiments of Regional Climate Simulation in China with RegCM3

作　　者：廉丽姝[1] 束炯[2] 李志富[3] 

机构地区：[1]曲阜师范大学地理与旅游学院,曲阜273165 [2]华东师范大学地理信息科学教育部重点实验室,上海200062 [3]曲阜师范大学图书馆,曲阜273165

出　　处：《气象科技》2011年第2期129-136,共8页Meteorological Science and Technology

基　　金：国家自然科学基金项目(40671176);曲阜师范大学科研项目(XJ200801);山东省自然科学基金项目(ZR2010DM011)资助

摘　　要：为使区域气候模式RegCM3在中国区域气候的模拟中取得更好的模拟效果,针对RegCM3进行了初始场、模式水平分辨率、侧边界方案及积云对流方案的敏感性试验。结果表明:①从冬季开始的积分,模拟结果对初始场的依赖性较小;②模式水平分辨率的提高不一定会带来模拟效果的显著改善,高分辨率的嵌套模拟会对模拟效果有一定程度的改善;③选用指数松弛侧边界方案和Grell积云对流方案模拟效果较好。以上结论可为应用RegCM3研究中国区域气候的数值模拟方案设计提供有价值的参考。The simulated results of regional climate model （RgrCM3） are sensitive to initial and lateral boundary conditions, model horizontal resolutions, and different parameterizations. The sensitivity experiments were conducted to improve the regional climate simulation over China with RgrCM3. The experiment results indicate that the regional climate simulation by using RegCM3 beginning from winter is suitable, as the results of simulation are not notably affected by initial bias. The improvement of the simulated results from the increase of horizontal resolution is indistinctive. Nest simulation with higher horizontal resolution is able to improve the simulated results. The exponential relaxation scheme and Grell convective precipitation parameterization are better than others in the regional climate simulation over China.

关 键 词：区域气候模式 敏感性试验 初始场 水平分辨率 侧边界方案 积云对流方案 

分 类 号：P435[天文地球—大气科学及气象学]