台风结构的非对称性对台风运动的影响

The Effection of Asymmetry of Typhoon Structure on Its Motion

本文分析了台风中心附近涡度局地变化■／■t的非对称性对台风加（减）速运动的影响结果表明，突然加速的台风，其前方和后方的■／■t分别为较大的正值和较小的负值；而突然减速的台风，其■／■t的分布则正相反此外，设计了一个综合考虑引导气流、涡旋结构以及涡度变化等因子作用的台风运动的预测方案。

In this paper, the effection of asymmetry in typhoon voricity field on its motion is analysed. It is shown that the distribution of local changes in voricity of typhoon moving acceleratively is differ from that moving decceleratively. Then, a predition scheme for typhoon motion is devised, in which the effections of streering currents and typhoon structure as well as local change in voricity on typhoon motion are considered sythetically.