一次冷空气强风的成因分析-海洋预报

一次冷空气强风的成因分析

作者：王雷

单位：舟山市气象局, 浙江, 舟山, 316004

分类号：P731

出版年·卷·期（页码）：2005·2005·第四期（96-101）

摘要：

文章分析了2004年12月底的一次冷空气强风过程,揭示了冷空气南下与东海低压的发展造成的气压梯度、高低空较强的冷平流以及中低空辐合辐散差异引起的动力强迫下沉作用所造成的动量下传是造成本次猛烈强风的主要原因。最大强风发生区域和发生时间既与低层和中层700hPa分别转为辐散和辐合中心对应,又与中低层700hPa以下正好处于下沉速度中心附近对应。

In this paper a strong cold air gale process occurred at the end of December in 2004 is analyzed.It reveals that the main reason of this strong gale is the pressure gradient caused by cold air and the depression in East China Sea,the strong cold temperature advection in upper and lower layer and the middle momentum transportation downward because of the dynamic forcing descending caused by the divergence at the lower lever and the convergence at the middle lever.The occurring area and time of the maximal ground gale are just in the area and at the time of the divergence and descending center at the lower level below 700 hPa and the convergence center at the 700hPa lever.

参考文献：

[1] 朱乾根,林锦瑞,等.天气学原理和方法修订本)[M] ,北京:气象出版社,1992,418.

[2] 张晓慧,盛立芳,等.渤海秋末初冬一次强寒潮天气过程分析[J].海洋预报,2004,21(3):54～55.

[3] 李秀连.首都机场寒潮强风极值出现条件的分析[J].气象,2002,28(11):42～44.

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