贵州省1996年“7·2”致洪暴雨成因分析

Analysis on Cause of Rainstorm Forming Flood of July 2, 1996 in Guizhou Province

分析1996年7月1日～3日产生大暴雨天气过程的环流背景和影响系统，指出直接造成该次大暴雨天气过程是低涡切变、长江横切变和低空西南急流，并结合物理量场的诊断分析；进一步探讨该次大暴雨天气过程的成因及物理机制．

Analyzing on the circulation background and affecting system of weather pro-cess producing rainstorm of July 2, 1996,the writer pointed out that the weather process di-rectly producing the rainstorm was low vortex shear,Changjiang lateral shear and low alti-tude south-west jet flow. Thus diagnosed and analyzed the fields of some physical parame-ters,the cause and physical mechanism of rainstorm weather process were studied further.