肇庆市一次超级单体的多普勒雷达资料分析

利用广州S波段多普勒雷达资料,对2004年7月1日夜间发生在广东省肇庆市的一次强对流天气过程进行分析,发现引起这次强对流的风暴具有超级单体风暴的特征。这个超级单体南边出现两条明显的出流边界,分别位于钩状回波的西南和东南。相应的中低层径向速度图呈现一个弱中尺度气旋,旋转速度达12m·s-1。该超级单体的移动方向在盛行风向的右侧约30°,属于右移风暴。

Analysis of a Supercell Storm with Doppler Weather Radar Data

A supercell storm is analyzed with the Guangzhou Doppler Weather Radar data. The storm occurred on 1 July, 2004 in Zhaoqing, Guangdong Province. There were two outflows lying to the southwest and southeast of the hook echo, respectively. The corresponding low to middle levels radial velocity maps showed a mesocyclone, with rotation velocity about 12m·s^-1. It was a right moving supercell storm moving to the right of the mean wind by 30°.