2002年6月9日汉中区域性暴雨过程分析

通过分析2002年6月8～9日汉中大暴雨的环流背景、物理量场的特征及其演变，表明热力、水汽条件在降水开始前24小时有一定的反映，中低层大的正涡度和高空的负涡度集中在非常狭窄的同一地区，是产生强降水的原因之一。

Analysis of Heavy Rain on June 9th 2002 in Hanzhongof Shaanxi Province

Based on the analysis of the features and evolution of the circulation background,and physical quantities of the heavy rain in Hanzhong during 8-9 June 2002, it is shown that thermal and water vapor conditions in Hanzhong have changed 24 hours before raining, strong positive vorticity at the middle and low levels and strong negative vorticity at the high level overlapped in a narrow region is also a inducement of the heavy rain.