利用CINRAD WSR-98D观测冬季暴雨的个例分析

A Case Analysis of Winter Heavy Rain with CINRAD WSR-98D Doppler Weather Radar

利用江西省新安装的CINRADWSR 98D多普勒天气雷达 ,对发生在 2 0 0 1年 1 1月 2日的江南冬季大暴雨的多普勒天气雷达观测结果 ,结合暴雨前一天 (1 1月 1日 )的 50 0hPa、850hPa天气图、卫星云图等资料 ,对产生这场冬季暴雨的天气条件、部分速度场和强度场等进行了初步分析。结果表明 ,根据零速度线走向可以判断和分析暴雨降水过程的冷、暖平流结构和其间的冷锋位置 ;也可以根据风场的速度值大小 ,判断暴雨区的进、退 。

Based on the observations by a CINRAD WSR-98D Doppler weather radar, and synoptic charts at 500hPa and 850hPa, satellite imagine, etc.,a case of heavy rain on November 2,2001 is analyzed. The results show that the cold/warm advection and the position of a cold front causing heavy rainfall can be determined and analyzed according to the run of zero velocity line, the movement of the heavy rainfall area can be determined according to wind fields.