INTERACTION BETWEEN TROPICAL CYCLONE AND MEIYU FRONT

被引：9

作者：

程朝晖 ^{[1
]}

亢迪 ^{[1
]}

陈联寿 ^{[1
]}

徐祥德 ^{[1
]}

机构：

[1] Chinese Academy of Meteorological Sciences Beijing 100081

来源：

Acta Meteorologica Sinica | 1999年 / 01期

基金：

中国国家自然科学基金;

关键词：

tropical cyclone(TC); Meiyu rainfall; numerical simulation; energy conversion;

D O I：

暂无

中图分类号：

P444 [热带气象];

学科分类号：

0706 ; 070601 ;

摘要：

Generally speaking,the convection activities are inactive over western Pacific warm pool andtropical cyclone(TC)activity seldom occurs over the offshore of East Asia during the period ofMeiyu rainfall.However,if a TC is active in this area,the Meiyu rainfall will often weaken or endup.Based on a statistical study with the data from 1980 to 1995,it is found that about 91% of 23TC activities affected the intensity of Meiyu rainfall,and 50% of the end-up of Meiyu events wererelated to the active TCs and the change of subtropical high.The present paper simulates the effectof TC on Meiyu circulation by using MM4 model,and the results agree with the observations.From the point of view of vapor and energy transport,the landing of TC cuts not only thetransport of the water vapor to Changjiang-Huaihe River basin from the Bay of Bengal but also theconversion of the mean flow energy to the Meiyu circulation because of the TC forcing to the zonalcirculation.These two effects make the convection and perturbation existing in Meiyu region lackthe supply of the vapor and energy for their maintenance and lead to the end of Meiyu rainfall.

引用

页码：35 / 46

页数：12