在過去相關研究中，多半使用地面雨滴譜儀來驗證模式模擬雨滴粒徑分布的演化過程。由於雷達資料擁有良好的時空解析度，於是本研究利用一維雲模式，並搭配國立中央大學大氣物理研究所雙偏極化雷達反演空中雨滴粒徑分布之技術，模擬台灣山區夏季午後天氣系統中，層狀區與對流區之雨滴粒徑分布的演化過程，並以雷達觀測產品做為驗證。研究結果發現，在沒有考慮水平方向空氣平流的情況下，透過給予一組層狀區上空3.5公里處的雨滴粒徑分布，一維雲模式能夠順利掌握到該區域的中值體積直徑向下漸增、高低層差值漸減的趨勢。此外模擬9 至10 分鐘後其模擬之垂直分布即相當接近雷達的反演場。在對流區中，雷達反演的中值體積直徑在3.5公里以下則是一直保持定值。比起考慮多種微物理過程的模式，僅考慮沈降作用的模式似乎能獲得較為一致的結果。推論主要的原因可能是本個案的對流區中，沈降作用較其他微物理過程重要。

Along the long history of the microphysical model development, the disdrometer is one of the main toolsto verify the evolution of the raindrop size distribution from the model calculation. In this research, theadvantages of the dual-polarization radar are , such as, the greater spatial and temporal resolutions, and theability of retrieving the raindrop size distribution using the reflectivity (ZH) , differential reflectivity (ZDR),and a given −relationship in the gamma form distribution. So, the major purpose of this research is to useradar data to confirm the output of the one dimensional cloud model during the real case. In order tounderstand the characteristics in both the stratiform and convective zones of a summer thunderstorm in NorthTaiwan, the raindrop size distribution in both regions was carefully retrieved from the dual-polarization radardata.There are distinct results in the stratiform and convective zones. In the stratiform zone, the MedianVolume Diameter (D0) retrieved from the NCU radar is increasing downward. Although lacking the advectioninformation in the model, the outputs agree well with the observation data. In the convective zone, theretrieved D0 from the radar data is near constant below 3.5 km. The model which only included thesedimentation has the similar distribution of D0. We think the sedimentation maybe dominate the evolution ofraindrop in this convective zone.