【摘要】 20 0 2年 7月 2 2～ 2 3日 ,长江中游地区出现了大范围暴雨过程 ,这次暴雨过程是在有利的大尺度环流背景下 ,由中α尺度切变线上的几个中β尺度系统直接导致的。利用雷达拼图以及雷达多普勒速度等资料分析了这次切变线暴雨过程 ,得到了一些有价值的结果。更多还原

【Abstract】 A large extent heavy rain process occurred over the Changjiang River basin during 22—23 July 2002 . The event was caused by several meso β scale convective systems in a meso α scale shear line under large scale weather situation. By analysis of the event with radar composite image and Doppler velocity data, several significant conclusions are obtained.更多还原