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利用WRF模式模拟青藏高原那曲地区一次对流降水过程.将模拟结果与实测资料进行对比分析,以了解不同微物理和边界层参数化方案组合对降水过程的模拟差异.结果表明,WRF模式能够模拟此次对流降水的发生,但对降水中心位置的模拟存在一定偏差,因此模拟结果与站点实测资料存在一定的差异.将模拟结果与TRMM卫星降水资料进行对比发现,两者的对流发生时间较为吻合.另外,使用不同的初边界条件对本次对流过程的模拟也存在一定差异,总体来说,ERA-Interim资料为初边界场时模拟的降水分布与TRMM降水观测资料的较吻合.通过对不同微物理和边界层参数化方案模拟的水汽通量、水汽通量散度和垂直运动分析,模式对本次降水过程的模拟对边界层参数化方案的敏感性超过微物理参数化方案.“,”A convective precipitation occurred in Nagqu over the Qinghai-Tibetan Plateau was simulated using WRF model with different microphysics and PBL physics options in this work.The simulations and observations were compared to understand the influence of the different microphysics and PBL physics options.The results show that WRF model can reproduce the precipitation,but a deviation of precipitation center exists between the simulation and the observation,which leads to discrepancies between them.Comparing the simulations with TRMM,a remote sensing product,the time when convention occurred is close.In addition,differences were produced by using different initial and boundary inputs.Overall,the simulations using ERA-Interim datasets as inputs produced better precipitation pattern than that using the NCEP FNL datasets,comparing with the TRMM datasets.By analyzing the differences of water vapor flux,water vapor flux divergence and vertical wind between the simulations with different microphysics and PBL physics options,it is found that the simulation of precipitation is more sensitive to the PBL physics than the nicrophysics options.