一次华北气旋造成的北京特大暴雪天气过程分析

摘要

Using the wind profile products from the Beijing Yanqing railway station and Haidian station, microwave radiometer products, radar products from the southern outskirts of Beijing city and Chedaogou station,observation data of weighing rain-gauge data from 58 stations,FY-2E satellite images and conventional meteorological data, the Beijing Blizzard weather process on November 3 to 4 in 2012 was analyzed. The result shows that:the precipitation phase (rain, snow) is determined by frontal properties and frontal location of the North China cyclone; the process is determined by the intensity and duration of rain and snow cyclone with water vapor channel; the wind profile and microwave radiometer data of the rain and snow had obviously indicative function for the start time and precipitation phase change.%利用北京延庆站和海淀站风廓线产品、微波辐射计产品、北京市雷达产品（南郊和车道沟）、北京市58个称重雨量站观测资料、FY-2E卫星云图、常规气象资料，综合分析了2012年11月3-4日北京暴雪天气过程。结果表明：降水相态主要受锋面性质和锋面位置影响；过程雨雪量受气旋的强度、持续时间和水汽通道维持时间影响比重大；风廓线和微波辐射计产品资料在雨雪开始时间、雨雪相态转换方面有明显的指示性作用。