Title: Analyses on weather system configuration of typhoon rainstorm and cloud type in Lushan
Abstract: Historical data of Lushan precipitation due to the landed typhoon in the last 10 years are analyzed,the results are as follows.(1) The typhoon moving paths impacting on the Lushan can be divided into Middle RoadⅠ and Ⅱ types,the former influences are the greatest,other landed typhoons whose central location is less than 25 °N or greater than 30 °N have very small effects on the Lushan.(2) There are a number of common features in the mid-,lower-and ground synthetic field,namely,high pressure extends westward to an area(32-42 °N,100-110 °E) and forms the high-pressure blocking dam,the south area of the Yangtze River,the South China Sea and Taiwan are in a closed low pressure region,which is a common type of weather system configuration in the course of Lushan typhoon storms.(3) The precipitation increase due to impact of Lushan terrain on typhoons is very obvious.(4) Typhoon rains in Lushan belong to three cloud types,including ①circular cloud type of peripheral typhoon,②cloud type of typhoon spiral rainbelt,③typhoon low pressure(trough) type.The cloud types are caused in three different typhoon stages,the typhoon rainstorms are related with the westerly system and the subtropical high barriers,the spiral rainbelt is triggered by vortex Rossby wave,mesoscale convective cloud development and the warm and moist low-level southwest jet and other factors.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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