江苏一次夏季强雷暴天气过程的综合分析

本文对2002年8月24日江苏的一次强雷暴天气进行了热力参数和动力学诊断分析,并结合多普勒雷达回波和红外卫星云图进行综合分析,结果表明,这次强雷暴处于地面高能量场中,而在垂直方向上与锋生函数、假相当位温、涡度散度的某些分布特征有较好的对应关系;在多普勒雷达回波图上表现强回波带的相互合并加强并形成较为典型的弓形回波;在卫星云图上MCS云团相互合并成典型的圆形,尺度较大,亮温较低,导致了强雷暴天气的发生。

INTEGRATED ANALYSIS OF A SEVERE THUNDERSTORM IN JIANGSU PROVINCE IN SUMMER

A diagnostic analysis of a severe thunderstrom in Jiangsu on August 24,2004 with thermodynamic and dynamic parameter was investigated in this paper,and an integrated analysis was also made with Dopper radar echo and infrared satellite cloud photograph.The result showed that this severe thunderstrom lay in the high surface energy field,had close relations to the distributions of frontgenesis function,vorticity,divergence in vertical direction.It was showed as a arc echo which was combined and strengthened by some severe zonality echos in Dopper radar.It was showed as a typical circular which was combined by some MCS clouds in satellite with large scale and low temperature feature,which caused the severe thunderstorm.