摘要
1989年4月19日23时至20日02时,川南地区发生了一次特大风雹事件,经单站资料和雷达、卫星照片分析,确认此次风雹灾害不是龙卷、飑线造成;而是与超级强风暴单体后部的下击暴流相联系.本文依据所收集的有限资料,从风暴形成的环流背景.能量条件、触发机制等方面作丁初步分析,发现“4·20”风暴的形成与以前总结的强雹暴形成模式差别较大,因此,对它有作进一步研究的必要.
A very serious disaster caused by wind and hail occurred in the south part of Sichuan Province on 20' April 1989. Having analysed the single station data and radar and satellite images, we attribute this disaster to the downburst of a super cell storm rather than squall or tornado and find that the '4 · 20' storm is different from hail storm in formating condition. It is necessary to study further the formation of '4 · 20' storm .
出处
《大气科学》
CSCD
北大核心
1992年第3期274-280,共7页
Chinese Journal of Atmospheric Sciences
