1981年7月9日～14日长江上游连续发生暴雨,特别是7月12日～14日暴雨范围之广,在四川暴雨历史上是罕见的。本文对该场暴雨实况及成因作了简要分析,着重计算和分析了水汽状况、水汽来源、水汽输送及水汽通量的辐合情况。一、暴雨概况 1981年7月9日至14日在我国发生了两次降水过程:第一次是7月9日至11日,雨带位于长江流域,呈东西向分布,与长江平行,上、中、下游均出现了暴雨,但主要暴雨中心位 July 9, 1981 to 14, the upper reaches of the Yangtze River continuous heavy rain, especially in July 12 to 14 days a wide range of heavy rain, torrential rains in Sichuan history is rare. This article gives a brief analysis of the actual situation of rainstorm and the cause of the rainstorm, and focuses on the calculation and analysis of the water vapor status, water vapor source, water vapor transport and water vapor flux convergence. First, the general situation of rainstorm July 9, 1981 to 14 occurred in our country twice the precipitation process: the first is July 9 to 11, the rain belt is located in the Yangtze River, showing an east-west distribution, parallel to the Yangtze River, on the Heavy rain appeared in the middle and lower reaches of the river, but the center of the main rainstorm occurred