吴虹璇,凌征

• 1:广东海洋大学海洋与气象学院//广东省近海海洋环境变化与灾害预警重点实验室

摘要(Abstract)：

【目的】探讨PDO不同位相期间MJO对南海热带气旋生成的影响。【方法】基于热带气旋最佳路径数据集、向外长波辐射和大气再分析资料,采用高斯滤波、经验正交函数分解和合成分析等方法。【结果与结论】南海热带气旋在PDO正(负)位相期间生成较多(少);PDO正位相期间,MJO对南海热带气旋的调制作用更强,热带气旋日生成率在MJO活跃位相和非活跃位相之比达5.60,远高于PDO负位相期间的2.59。在PDO正位相期间,MJO信号在南海北部更强,使得影响热带气旋生成的各动力因子在MJO活跃和非活跃位相的差异更大,从而导致在PDO正位相期间MJO对南海热带气旋生成的调制作用更强。

关键词(KeyWords)： PDO;MJO;南海;热带气旋生成

Abstract:

Keywords:

基金项目(Foundation): 广东海洋大学启动经费资助项目--热带气旋与地形相互作用对南海影响研究(R17073)

作者(Author): 吴虹璇,凌征

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