2003～2004年强对流灾害性天气多普勒天气雷达产品特征分析

Analysis of Doppler Radar Products Features of Severe Convective Events in Ningxia in 2003 and 2004

利用银川新一代天气雷达2003～2004年汛期监测到的12次强对流天气过程产品,主要包括:强度、速度、组合反射率、冰雹指数、风廓线、风暴追踪信息、垂直积分液态水含量、中尺度气旋等,特别是径向速度回波产品,根据产品图象特征,将其分为3类,分别从中尺度天气学原理等进行深入的综合分析,得出多普勒天气雷达的几种重要产品对强对流天气特别是冰雹天气的临近预报具有重要使用价值,同时与常规数字化天气雷达进行了对比分析。

Using the new generation weather radar(CINRAD) data including echo intensity, velocity, composite reflectivity, hail index, profile, storm tracing information, VIL and meso-cyclone, 12 severe convective weather events occurred in 2003 and 2004 in Ningxia were studied. According to image characteristics, radial velocity products were classified as 3 types, and were analyzed respectively from meso-scale synoptic principle. Results show that the products of CINRAD are useful to forecast severe convective events, especially hail. Meanwhile, the comparison analysis was given also between CINRAD and routine weather radar in this paper.