摘要
本文研究了9601号热带风暴减弱为低压环流后引起突发性大暴雨的成因。结果表明：9610号热带风暴减弱后的低压环流移支福建省南部地区，造成闽西地区湿斜压锋区和不稳定能量明显增强，在低压西侧辐合线所提供的福合上升运动激发下，中尺度对流云团迅速发展，导致远离低压中心的闽西突发大暴雨。闽西特殊的地形对特大暴雨的产生起了组织和增幅作用。另外，还通过逐时数字红外云团图的分析，揭示中尺度对流云团发展演变特征与突发性大暴雨的关系，供日常短时预报参考。
This paper studied the reasons of causing the abrupt heavy rainfall inLongyuan area after the 9610 storm has been weekened to depression. The results show thatthe low circulaion weekened from 9610 tropical storm landed on south Fujian province, whichcaused the evident enhancement of moisture baroclinic frontal zone and unstability energy inwest Fujian area,under the triggering of strpng convergence and vertical asceneding providedby the convergence line at west side of the low, the mesoscale convective cloud developedquickly,and caused the abrupt heavy rainfall near west Fujian which was far away from thelowdepression.
出处
《气象科学》
CSCD
北大核心
1998年第2期174-180,共7页
Journal of the Meteorological Sciences
关键词
大暴雨
中尺度
对流云团
卫星云图分析
闽西地区
Heavy rainfall
Mesoscale convective cloud
Satellite cloud images
Analysis
