热带气旋Rossby波能量频散问题研究进展

热带气旋是发生在热带洋面上的强烈气旋性涡旋.由于地转涡度梯度的存在,热带气旋在移动过程中不断发生Rossby波能量频散,并在热带气旋运动方向的后部激发出反气旋和气旋交替排列的Rossby波能量频散波列.多热带气旋共存和热带气旋的异常运动是当前国际热带气旋研究领域的热点问题,热带气旋Rossby能量频散被证实与多个热带气旋连续生成和异常运动密切相关.本文从热带气旋能量频散及波列特征、主要影响因子、反馈作用等方面,回顾总结了国内外关于热带气旋Rossby波能量频散的相关研究进展,并提出当前亟待解决的一些科学问题.目的是为深入研究热带气旋Rossby波能量频散及其影响提供基础和参考,以期使更多的研究学者关注热带气旋能量频散问题,从而进一步揭示热带气旋生成、发展和异常运动的动力学机理.

Advances in the research of Rossby wave energy dispersion of tropical cyclone

Tropical cyclone is the fiercest cyclonic vortex forming over the tropical ocean.When a tropical cyclone(TC)moves,it continues emitting its energy through Rossby wave energy dispersion due to the planetary vorticity gradients.In the wake of the moving TC,a Rossby wave train with alternating anticyclonic and cyclonic vorticity perturbations is induced.In the international TC research,multiple TC events and their abnormal motions are hot issues.These hot issues has been proven to be closely related to the TC Rossby wave energy dispersion.In this study,the main advances in the TC energy dispersion have been reviewed,including the Rossby wave propagation and wave train characteristics,main influencing factors,and feedback effects.And the potential problems in the present researches has been proposed.The purpose of this study is to lay the foundation for further studying TC Rossby wave energy dispersion.We hope the issue of TC Rossby wave energy dispersion will attract more attentions on further unveiling the dynamic mechanism of formation,development and abnormal movement of tropical cyclone.