0601号台风“珍珠”路径及舟山沿海风雨特征分析-海洋预报

0601号台风“珍珠”路径及舟山沿海风雨特征分析

单位：浙江省舟山市气象局, 浙江, 舟山, 316021

分类号：P731

出版年·卷·期（页码）：2007·24·第四期（65-70）

摘要：

受0601号台风"珍珠"和弱冷空气共同影响,2006年5月18日舟山普降暴雨,18日下午至19日早晨,舟山沿海海面风力达到11级,11级大风持续时间长达20个小时。本文利用常规资料对台风"珍珠"路径和舟山风雨特征进行了分析,分析表明:台风"珍珠"移动路径属抛物线状登陆转向路径,它主要是由副热带高压和西风槽影响形成的。对于早期登陆北卜的台风,预报上要着重考虑中纬度西风槽、冷空气与台风环流相互结合时降水、风力的不对称分布。台风与西风槽相互作用有利于台风暴雨的加强。台风环流与弱冷空气的相互作用促使台风倒槽发展,使结合区域强风出现时间提前,持续时间加长。

By the effect of 0601 Typhoon“Chanchu”and weak cold air, rainstorm occurred at Zhoushan on May 18,2006, and eleven scale strong wind occurred over Zhoushan coastal area from the afternoon of May 18 to the morning of Mayl9, the strong wind had continued for 20 hours. By using conventional observation data, the track of Typhoon“Chanchu”and the wind-rain characters over Zhoushan coastal area is analyzed. The results show: the track of Typhoon "chanchu" was a parabola, this was by the effect of subtropical high and upper trough. To the early Typhoon landing and moving to north, on forecast, it is attaches importance to the rain-wind irregular distribution, when upper trough, cold air and Typhoon circulation are combined to each other. The rainstorm at Typhoon’s north is strengthened when Typhoon and upper trough are actted to each other. When Typhoon circulation and weak cold air are actted to each other, it lead to the development of Typhoon trough and earlier time of strong wind appearred and longer time cont inued.

参考文献：

[1] 朱乾根,等.天气学原理和方法(第三版).北京:气象出版社,2000.
[2] 陈联寿,等.西太平洋台风概论.北京:科学出版社,1979,447～456.

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