A Case Study of Typhoon Torrential Rain

In this paper, a case of typhoon torrential rain over North China is analysed using synoptic and Dynamic diagnostic method. The analysis reveals that a southeasterly low level jet between typhoon and West Pacific subtropical high is evidently characterized by supergeostrophic wind, and it is a key system for the typhoon torrential rain over North China. The Q-vector analysis shows that the regions where Q is convergent coincide with torrential rainfall area