摘要
利用位于河北新乐的CINRAD-SA多普勒天气雷达(回波强度、回波顶高、速度回波、垂直积分液态含水量、组合反射率、冰雹指数、中气旋、风廓线等)产品,对发生在河北省中南部地区的冰雹、强风、大型降水天气过程进行了统计分析。从中得到了不同天气类型的多普勒雷达指标,为今后利用多普勒雷达识别各类天气提供参考依据。
Based on the data of CINRAD Doppler Radar which located at Xinle of Hebei Province, the hail, strong wind and heavy rainfall weather events in mid-south Hebei in 2004 are statistically analyzed. The routine radar products, such as echo reflectivity, radial velocity, Vertically Integrated Liquid （VIL） Water, hail index, mesocyclone, velocity azimuth display wind profile, etc. are used in this statistics. The results show that hail＇s VIL value is larger than generic thunder storm＇s. At the same time, greater VIL value and longer sustaining will bring about greater diameter hail and larger effect area. It is the very useful index to indicate strong wind in mesocyclone products and the wind direction sudden change in radial velocity products. A reference based on analyzing this type synoptic forecast with radar system in future is proposed.
出处
《气象》
CSCD
北大核心
2006年第10期64-69,I0003,I0004,共8页
Meteorological Monthly
关键词
多普勒天气雷达
强对流天气
识别指标
Doppler weather radar severe convective weather identification index
