This study attempts to investigate the numerical simulations of a rainfall processes over the central region of the Democratic People’s Republic of Korea (DPRK) that occurred on 11–12 August 2009 using Advanced Research Weather Research and Forecasting model. Three simulations are preformed to study the WRF model sensitivity to cloud microphysics parameterization schemes (WDM6, Thompson, SBU-YLIN) on the rainfall prediction. The detailed comparison was made between the 45 h spatial distribution of model rainfall and observations obtained from rainfall gauges. Model results are compared in terms of probability of detection, false alarm ratio, and BIAS from 29 weather stations. Results show that the microphysics schemes significantly influenced the rainfall simulation due to differences in mixing ratios of different hydrometeors. The SBU-YLIN scheme captured the spatial distribution and cumulative amounts of rainfall in close agreement with the observations. The Thompson and WDM6 schemes predicted the rainfall event with lower intensity. Results suggest that the SBU-YLIN scheme captured the time evolution of different hydrometeors that led to produce the observed rainfall distribution spatially and temporally. The results of this study show the importance of the microphysics schemes in simulating rainfall processes, as well as the high potential of using WRF for future forecasts, especially for heavy rainfall events over the DPRK.

本研究试图使用高级研究天气研究和预报模型调查朝鲜民主主义人民共和国（DPRK）中部地区在2009年8月11日至12日发生的降雨过程的数值模拟。进行了三个模拟，以研究WRF模型对降雨预测中云微物理参数化方案（WDM6，Thompson，SBU-YLIN）的敏感性。在模型降雨的45小时空间分布与从降雨量测量仪获得的观测值之间进行了详细的比较。根据29个气象站的探测概率，误报率和BIAS对模型结果进行了比较。结果表明，由于不同水凝物混合比的差异，微观物理方案对降雨模拟有显着影响。SBU-YLIN方案与观测非常吻合，捕获了降雨的空间分布和累积量。Thompson和WDM6方案以较低的强度预测了降雨事件。结果表明，SBU-YLIN方案捕获了不同水汽的时间演变，从而导致了观测到的时空分布。这项研究的结果表明，微物理方案在模拟降雨过程中的重要性，以及将WRF用于未来预报的潜力很大，特别是对于朝鲜境内的强降雨事件。结果表明，SBU-YLIN方案捕获了不同水汽的时间演变，从而导致了观测到的时空分布。这项研究的结果表明，微物理方案在模拟降雨过程中的重要性，以及将WRF用于未来预报的潜力很大，特别是对于朝鲜境内的强降雨事件。结果表明，SBU-YLIN方案捕获了不同水汽的时间演变，从而导致了观测到的时空分布。这项研究的结果表明，微物理方案在模拟降雨过程中的重要性，以及将WRF用于未来预报的潜力很大，特别是对于朝鲜境内的强降雨事件。