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渤海湾风暴潮天气系统及风场结构个例分析
引用本文:胡欣,景华,王福侠,张迎新.渤海湾风暴潮天气系统及风场结构个例分析[J].气象科技,2005,33(3):235-239.
作者姓名:胡欣  景华  王福侠  张迎新
作者单位:河北省气象局气象台,石家庄,050021
摘    要:利用常规资料、中尺度模式(MM5)模拟结果和自动站资料分析了2003年10月11日渤海湾风暴潮的天气系统及风场结构特征。分析表明,强冷空气从偏东路径南下与强盛的暖湿急流及地面倒槽的共同作用,形成持续强东北大风是引发渤海风暴潮的主要强迫动力,风应力海水向岸输送(增水)范围约100km持续时间10~12h,风应力增水作用与天文大潮相叠加直接导致风暴潮的发生。1985年以来渤海湾成灾风暴潮发生的几率明显增加。

关 键 词:天气系统  风暴潮  渤海湾  个例分析  风场结构  2003年10月  中尺度模式  1985年  常规资料  结构特征  资料分析  模拟结果  共同作用  地面倒槽  强冷空气  东北大风  持续时间  风应力  自动站  分析表  水作用  急流  路径  增水  海水
修稿时间:2004年3月10日

Analysis of Synoptic System and Wind-Field Structure of a Storm Surge in Bohai Sea
Hu Xin Jing Hua Wang Fuxia Zhang Yingxin.Analysis of Synoptic System and Wind-Field Structure of a Storm Surge in Bohai Sea[J].Meteorological Science and Technology,2005,33(3):235-239.
Authors:Hu Xin Jing Hua Wang Fuxia Zhang Yingxin
Abstract:Based on the observational data from conventional and automatic weather stations and numerical forecast products of the mesoscale model MM5, the synoptic system and wind field structure of a storm surge in the Bohai Sea on 11 October 2003 were analyzed. The results show that the main causes of the storm surge are the strong northeast wind engendered by strong cold air from northeast and warm air from southwest and inversion; the inshore transport of seawater lasted 10-12 hours over an area of 100 km, directly resulted from the inshore wind and astronomical tides concurrently. It is also found that the occurrence frequency of storm surges has increased obviously since 1985.
Keywords:Bohai Sea  storm surge  synoptic system  wind-field structure
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