东风波对台风疑难路径的影响

The Influence of Easterly Wave on Typhoon Knotty Track

讨论了东风波对台风疑难路径的影响，结果指出，东风波对台风疑难路径的影响有两种情况：一是在东风波内形成的台风，二是由东风波西移叠加在其南侧的台风（或热带风暴）上。这两种情况，都会使台风路径偏离常规的引导气流，向比较偏北的方向移动，并可能穿越副高，从而形成了台风疑难路径。对疑难路径的成因也进行了研究。

he influence of easterly wave on typhoon Knotty track is discussed the result shows that there are two cases of this influence:one is that typhoon formed in the easterly wave,the other is that easterly wave moved westward and mixed with the typhoon (or tropical storm) in its southern part. These will cause typhoon track to deviate from its normal dominating air current and move northward, then pass through subtropical high, thus typhoon Knotty track appears. The reasons of forming this kind of knotty track are analysed.