中文摘要：

利用WRF v3.2.1模式,采用其中5种云微物理参数化方案对2007—2011年的东亚夏季风气候进行了模拟研究,结果显示：5种方案均能较好地模拟出我国东部地区夏季降水的基本分布,但各方案对降水中心强度及其分布的模拟仍然存在明显的差异,总体来看,WDM6方案模拟的东亚夏季降水强度明显比其他4种方案大,而Morrison方案对降水的模拟总体效果好于其他4种方案。从云微物理角度来看,5种云微物理参数化方案均能比较合理地描述云水、雨水及冰相粒子的空间分布状态。其中,WSM3方案计算的云水、雨水质量混合比明显比其它方案大,WDM6方案计算的云水质量混合比则较小,而Morrison方案计算的雨水质量混合比较小,再者该方案冷云中霰粒子浓度偏小,因而Morrison方案在粤闽两省的夏季日降水量模拟比其他方案小,从而与TRMM观测结果更为接近。采用5种云微物理参数化方案均能较好地模拟出春、夏季西太平洋副高、雨带和大气水凝物在东亚地区的季节进退过程。5种方案模拟的雨水粒子浓度分布和中纬度雨带在南北进退过程中的位置较为吻合,两者均跟随西太平洋副高北进、南退。对于中低纬度存在的大降水中心来说,其位置少动,并且与该地区存在的的冰晶、雪晶粒子的高值中心具有较好的对应关系,说明在中低纬度地区,与热带对流相伴随的较高层次的冰相粒子数的浓度是决定降水强弱的关键因素。

英文摘要：

By using the mesoscale WRF model version 3.2.1, the simulation effects of five different microphysics schemes on summer monsoonal climate from 2007 to 2011 in East Asia were comparatively analyzed. Results show that each scheme can clarify the distribution of summer daily precipitations in eastern China, however, obvious difference exists in the simulations of summer precipitation intensity and distributions： the summer precipitation intensity by the WDM6 scheme is obviously stronger than other four schemes and the total performance of simulated precipitation by Morrison scheme is better than other schemes. Moreover, five microphysics schemes simulate well the spatial distributions of cloud water, rain and ice-phase particles. The cloud water and rain mixing ratios calculated by WSM3 scheme is clearly larger than other schemes, while the cloud water mixing ratio by WDM6 is smaller compared to other schemes. In addition to the relatively smaller rain mixing ratio by Morrison scheme, the mixing ratio of graupel in cold cloud is also smaller, resulting in the weaker summer daily precipitation between the Guangdong province and the Fujian province than other schemes but more close to the TRMM dataset. What＇ s more, five microphysics schemes also can describe the seasonal advance and retreat of the sub- tropical high, rain belt and atmospheric hydrometeors over East Asian. Besides, the rain water particles and the rain belts in the latitude of five microphysics schemes are consistent with each other in the process of their advance and retreat, following after the northward advance and the southward retreat of the sub- tropical high. Finally, the abundant precipitations in the low-middle latitude areas, which is little availa- ble to move to the other districts, are always consistent with the maximum of the ice and snow particles o- ver these areas, it means that the density of ice-phased particles at high level of atmosphere resulted from the tropical convection is the key factor to determine the strength of preci