东亚甚长陆上路径的台风暴雨

本文分析了1984年7号台风(Freda)在东亚大陆上罕见的从登陆出海历程3500km的甚长陆上路径的台风暴雨的全过程。指出在东亚大陆上自南到北的甚长陆上路径的台风暴雨主要经历热带、半热带、温带3个阶段,分析了3阶段暴雨过程的特征及系统的性质结构,并与北美洲的甚长路径的台风暴雨相比较,讨论了两者的差别。文章结果修正了经典的天气学模式,可供东亚地区台风暴雨的业务预报参考。

The heavy typhoon-rain with a very long land track

In this paper, it is analysed that the whole heavy rainfall process caused by Typhoon Freda which covers a very long distance route (near by 3500km) over the East Asia contienent in 1984. It is indicated that such a heavy typhoon-rain with a very long land track experiences the tropic, semi-tropic and ertratropic stages . The characteristics of the heavy rainstorm processes and constructions of the systems in the three stages are studied. Comparing with that the similar rainstorm occurring over the North America contienent, the differences are discussed. The results are used to correct the typical synoptic model and could be considered as the reference for the forecasting of heavy rainfall effected by typhoon over the East Asia.