中文摘要：

利用激光雨滴谱仪OTT的观测资料,分析了2014—2015年南京地区春、夏两季小雨、中雨、大雨、暴雨四类不同降水强度的雨滴的微物理参量的演变特性,以及雷达反射率因子Z与降水强度R的关系。结果表明,不同强度等级降水的粒子平均直径差异较小,降水粒子数浓度、单位体积含水量均随降水强度等级的增强而增大;Gamma拟合分布时春季和夏季暴雨的效果最好;春季和夏季降水的Z—R关系间存在较好的指数关系。

英文摘要：

By using the data of OTT laser raindrop spectrometer,the microphysical characteristics for different rainfall intensity in Nanjing in spring and summer 2014-2015 are studied.The evolution characteristics of microphysical parameters and the relationship between radar reflectivity factor Zand the precipitation intensity Rare also studied.The results show that the difference of average diameter for different precipitation intensity was small.The precipitation particle number concentration and the moisture content in unit volume increase with the precipitation intensity level.The best result of Gamma fitting is for torrential rain.The Z-Rindex shows a good exponential relationship.