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气象:2005,31(11):15-18
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2003年10月风暴潮的形成及数值模拟分析
(1.河北省人工影响天气办公室,石家庄 050021;2.河北省气象台;3.民航石家庄空管站气象台)
Analysis of the Formation of a Storm Surgeand its Numerical Simulation
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中文摘要: 2003年10月11日发生在河北省中南部地区的特大暴雨是京津冀近50年来同期所罕见的,同时渤海湾还出现了风暴潮过程。对该过程应用非静力MM5的二重网格双向嵌套进行了全物理过程的数值模拟,并应用天津市多普勒雷达资料和常规气象资料进行了分析研究。结果表明:(1)MM5模式能够较好地模拟出风场、气压场、降水量场,在预报业务实践中有很好地参考价值;(2)海面偏东风的长时间维持,使海水堆积、海平面抬高,加上天文大潮的叠加而引发风暴潮;(3)风暴潮期间速度方位风廓线近地面的E—NE风随时间有增厚现象,在增厚的同时使降
Abstract:A heave rain event appeared in the middle and southern area of HeBei Province accompanied with storm surge in Bohai Bay on 11th October 2003. This was very rare in North of China in autumn. Based on the MM5 and Doppler radar data, the event is analyzed. The results show that (1) MM5 is better in simulation of steam field, sea-level pressure field and precipitation. (2) The permanence of eastern wind over Bohai sea resulted in the heap of sea water and the rise of sea level. Folding with chronometer strong tide, the storm surge occurred. (3) The thick layer of E—NE wind near the surface in the period of storm surge was increased, and the meantime precipitation was decreased.
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引用文本:
李云川,张迎新,王福侠,戴念军,陈卫丽,2005.2003年10月风暴潮的形成及数值模拟分析[J].气象,31(11):15-18.
,2005.Analysis of the Formation of a Storm Surgeand its Numerical Simulation[J].Meteor Mon,31(11):15-18.