高空偏北大风与有无暴雨的对比分析

Comparison of the upper northeasterly flow with and without heavy rain .

利用常规观测资料对 1991～ 1996年江淮地区梅雨期的高、低层流场进行合成诊断分析 .比较了高空偏北大风下有无暴雨在天气形势、物理量特征、三维流场方面的差异 .文中一些分析结果可供暴雨预报参考 .

With the use of conventional observation data from 1991 to 1996, composite analysis of the evolutions of the upper and lower levels winds and the upper northeasterly flow during the onset period of Jianghuai Mei-yu was conducted. The comparison between two types of heavy rains is made related to their weather situations, dynamics, and three-dimensional stream fields. Results of the analysis are shown to be useful for the forecast of heavy rains.