新一代天气雷达对局地强风暴预警的改善  

Comparison between NEXRAD and Traditional Radars in Their Warning Capability on Local Severe Storms,Tornadoes and Flash Flood

作　　者：俞小鼎[1] 

机构地区：[1]中国气象局培训中心,北京100081

出　　处：《气象》2004年第8期3-7,26,共6页Meteorological Monthly

摘　　要：介绍美国新一代天气雷达 (WSR 88D)与传统天气雷达在探测和预警局地强风暴方面的评分对比。评分系统采用命中率POD、误警率FAR和警报提前时间。这有助于了解正在布网的我国新一代天气雷达可能带来的对局地强对流风暴预警能力的改善程度。The comparison between US NEXRAD and traditional radars in their warning capabality on local severe storms,tornadoes and flash flood is described. It shows that the warning capability is significantly improved with NEXRAD (WSR-88D) replacing the traditional weather radars (WSR-57). Although in China,tornado is much less frequent than that in US,a large improvement can be still expected in local severe storm warnings with the installation of new generation weather radar network.

关 键 词：天气雷达 强对流风暴 预警 多普勒测速 

分 类 号：TN959.4[电子电信—信号与信息处理]