双热带气旋相互作用研究综述

A Summary of the Research on Interactions of Twin Tropical Cyclones

在对西北太平洋上双热带气旋(TC)相互作用统计基础上,探讨了2个大尺度气旋性涡旋间的相互作用对TC路径、降水强度和落区的影响,结果表明:①双TC相互作用现象集中在7—10月,与TC生成的高发期一致;②双TC相互作用主要受到双TC的结构与强度、中心距离、地理位置和环境场的影响。③双TC相互作用常使TC出现异常路径,强度变为一强一弱,以及远距离TC降水。

On the basis of statistics of the interactions of twin tropical cyclones(TCs)for the northwest-ern Pacific,this paper studies the effect of interactions between two large-scale cyclonic vortexes on the paths of TCs,their precipitation intensity and area.The result is shown as follows.①The phenomenon of twin TCs interactions concentrates in July-October,which is consistent with the time of high TCs genesis.②The inter-actions are mainly affected by the structure and intensity of twin TCs,the distance between their centers and geographical locations and environmental fields.③The interactions usually cause the TCs to have abnormal paths,strengthen one TC while weakening the other,and result in precipitation far away from them.