2004年鲁西南两次台风低压暴雨过程对比分析

对2004年鲁西南两次台风影响造成的大~暴雨过程分析结果表明,西风槽作用下的降水,若有台风低压参与,系统均得以发展,雨势进一步加强。台风低压与西风槽结合及结合点位置,对鲁西南暴雨的形成均很重要。如副高强盛西进时,一般台风低压偏西,与西风槽结合点偏西;副高东退时,结合点一般偏东。

Contrastive analysis on the two processes of the rainstorm impacted by typhoon depression in the southwest of Shandong province in 2004

We analyze the two rainstorm ~ heavy rainstorm process impacted by the typhoon from the southwest of Shandong province in 2004,the results show that the precipitation under the function of typhoon depression and westerly trough will intensify ulteriorly.The situation of the conjunct locus of the typhoon depression and the westerly trough is very important for the forming of the rainstorm in the southwest of Shandong province.When powerful subtropical high moves west,the typhoon depression leans to west popularly,and also does the conjunct locus of the typhoon depression and the westerly trough,when subtropical high withdraws east,the conjunct locus leans to east usually.