The Impact of the Eastward Shifting of Dipole Systems over Large-Scale Terrain on Tropical Cyclone Tracks  

大地形上空偶极子东移对热带气旋路径的影响(英文)

作　　者：陈联寿 罗哲贤 

出　　处：《Advances in Atmospheric Sciences》2002年第6期1069-1078,共10页大气科学进展（英文版）

基　　金：This paper is supported by " 973" heavy rainfall program and the National Natural Science Foundation of China under Grant Nos. 49775263 and 40175019.

摘　　要：With a quasi-geostrophic barotropic model on the β-plane with a topography term, 16 experiments were performed with an integration period of 6 days. The interaction between tropical cyclone tracks and 500 km-scale vortices originating from the western part of a large-scale topography is investigated. It is suggested that this kind of interaction may have a significant impact on the moving speed and direction of tropical cyclones. Under certain conditions, this interaction may be a factor in causing an abnormal tropical cyclone track. Furthermore, the effect of large-scale topography plays an important role in the formation of unusual tropical cyclone tracks.With a quasi-geostrophic barotropic model on the β-plane with a topography term, 16 experiments were performed with an integration period of 6 days. The interaction between tropical cyclone tracks and 500 km-scale vortices originating from the western part of a large-scale topography is investigated. It is suggested that this kind of interaction may have a significant impact on the moving speed and direction of tropical cyclones. Under certain conditions, this interaction may be a factor in causing an abnormal tropical cyclone track. Furthermore, the effect of large-scale topography plays an important role in the formation of unusual tropical cyclone tracks.

关 键 词：Tibetan Plateau DIPOLE interaction tropical cyclone abnormal track topographic effect 

分 类 号：P444[天文地球—大气科学及气象学]