摘要
本文对0515台风“卡努”登陆浙江后,强度减弱为强热带风暴,对影响浙江沿海海面及沿海地区的外围风速远强于近风暴中心风速进行了分析,分析结果表明:副热带高压的加强、对流层中下层急流的动量下传、高空较强的下沉气流和台风外围气压梯度力迅猛增大的共同作用,是造成本次风暴外围风速远强于近风暴中心风速的重要原因。
0515 Typhoon"Khanun"caused serious destruction in Zhejiang Province. The reasons why the outer wind speed of the typhoon is much spedier than the near central wind speed have been analyzed in this article. The results show that the strengthening subtropical high pressure, the momentum transmission of jet stream in the middle-lower troposphere, a violent downdraft from upper air and a sudden intensification of the outer pressure gradient three of the tyhoon are the important factors due to the strong outer wind of typhoon.
出处
《海洋预报》
2006年第4期13-20,共8页
Marine Forecasts
基金
国家科技部公益类项目(2002106)课题资助。
关键词
台风
急流
动量下传
下沉气流
气压梯度
Typhoon: Jet stream
momentum transmission
downdraft
Pressure gradient