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对一次温带气旋引发渤海风暴潮过程的数值模拟 被引量:16
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作者 杨晓君 何金海 +3 位作者 吕江津 朱磊磊 何群英 王颖 《气象与环境学报》 2010年第4期61-65,共5页
利用三维非静力中尺度大气模式—MM5(Version 3.7)输出的黄渤海海面风场和气压场预报资料,用三维斜压陆架海模式—HAMSOM对2008年8月22日温带气旋造成的渤海风暴潮过程进行了模拟,得到逐时的渤海增水场、渤海风暴潮流场,并与验潮站的观... 利用三维非静力中尺度大气模式—MM5(Version 3.7)输出的黄渤海海面风场和气压场预报资料,用三维斜压陆架海模式—HAMSOM对2008年8月22日温带气旋造成的渤海风暴潮过程进行了模拟,得到逐时的渤海增水场、渤海风暴潮流场,并与验潮站的观测数据进行比较。结果表明:在渤海西部已经转为西北风的情况下,塘沽出现了121cm的高增水,造成这种现象的原因很复杂,其中远距离的气旋作用产生的北黄海海域偏东大风导致北黄海水体大量涌入渤海应该是一个主要原因。这也是今后预报业务中必须特别关注的产生风暴潮的重要因素。数值模拟的塘沽测站风暴潮增水极值及增水过程均与实测值符合较好,应用数值预报可以较好地模拟出这种特殊的风暴潮。在离岸风的情况下产生风暴潮,仅靠预报员凭经验主观分析判断较难,数值预报可以弥补预报员主观分析的不足。 展开更多
关键词 海洋气象 温带气旋 渤海风暴潮 数值模拟
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温带气旋诱发的渤海风暴潮天气分析 被引量:11
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作者 侯淑梅 孙忠欣 盛春岩 《气象科学》 CSCD 北大核心 2009年第2期220-224,共5页
通过对2007年3月4日渤海风暴潮天气过程进行分析,结果表明,强烈而持久的向岸大风是造成风暴潮的重要因素;气旋四周较强的气压梯度力是风暴潮的主要强迫动力;风应力增水作用与天文大潮相叠加直接加剧了风暴潮的强度;渤海特殊的地形特征... 通过对2007年3月4日渤海风暴潮天气过程进行分析,结果表明,强烈而持久的向岸大风是造成风暴潮的重要因素;气旋四周较强的气压梯度力是风暴潮的主要强迫动力;风应力增水作用与天文大潮相叠加直接加剧了风暴潮的强度;渤海特殊的地形特征有利于形成风暴潮天气,渤海地区风向的变化是导致渤海沿岸各地出现高潮位时间差的主要原因,当地面风由东北转为西北后,渤海湾的潮位开始回落,渤海海峡的潮位继续升高,其最高潮位出现时间与潮位回落时间均滞后于渤海湾;由于气旋的移动路径和影响时间造成渤海海峡的风速极值滞后于渤海湾,而其增幅却远远大于渤海湾。 展开更多
关键词 渤海风暴潮 温带气旋 向岸风 强迫动力
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“070304”渤海特大风暴潮的成因分析 被引量:5
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作者 张承旺 侯淑梅 孙忠欣 《山东气象》 2007年第2期25-27,共3页
对2007年3月4日发生在渤海的特大风暴潮天气过程,从大气环流形势、动力条件、天文条件、地形条件等方面进行了详细的分析。结果表明,长时间北高南低的地面气压场在渤海形成持久的偏东大风是造成风暴潮的重要因素;强烈的低层辐合高空辐... 对2007年3月4日发生在渤海的特大风暴潮天气过程,从大气环流形势、动力条件、天文条件、地形条件等方面进行了详细的分析。结果表明,长时间北高南低的地面气压场在渤海形成持久的偏东大风是造成风暴潮的重要因素;强烈的低层辐合高空辐散使地面气旋不断加强,气旋四周较强的气压梯度力是风暴潮的强迫动力之一;风应力增水作用与天文大潮相叠加直接加剧了风暴潮的强度。渤海特殊的地形特征有利于形成风暴潮天气,当地面风由东北转为西北后,渤海湾的潮位开始回落,渤海海峡的潮位继续升高,其最高潮位时间与潮位回落时间均滞后于渤海湾。 展开更多
关键词 渤海风暴潮 成因分析 强迫动力 渤海海峡 向岸风
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An Elliptical Wind Field Model of Typhoons 被引量:1
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作者 WANGXiuqin QIANChengchun +1 位作者 WANGWei YANTong 《Journal of Ocean University of China》 SCIE CAS 2004年第1期33-39,共7页
An elliptical wind field model of typhoons is put forward based on the characteristics of the typhoon wind fields occurring in the Yellow Sea and Bohai Sea. By contrasting it with the circular typhoon wind field model... An elliptical wind field model of typhoons is put forward based on the characteristics of the typhoon wind fields occurring in the Yellow Sea and Bohai Sea. By contrasting it with the circular typhoon wind field model, it is found that the elliptical model can adequately represent the real wind field and trace the process of a typhoon storm surge. The numerically simulated results of storm surges by using the elliptical model are in good agreement with the observations and markedly better than those by using the circular model. 展开更多
关键词 elliptical wind field model tropical cyclone storm surge numerical simulation
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A Numerical Study of the Effects of Coastal Geometry in the Bohai Sea on Storm Surges Induced by Cold-Air Outbreaks 被引量:6
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作者 ZHAOPeng JIANG Wensheng 《Journal of Ocean University of China》 SCIE CAS 2011年第1期9-15,共7页
Strom surges are not only determined by the atmospheric forcing,but also influenced by the coastal geometry and bathymetry.The Bohai Sea,as one of China’s marginal seas,is seriously harmed by storm surges,especially ... Strom surges are not only determined by the atmospheric forcing,but also influenced by the coastal geometry and bathymetry.The Bohai Sea,as one of China’s marginal seas,is seriously harmed by storm surges,especially those caused by cold-air outbreaks.As the coastline of the Bohai Sea has changed evidently these years,storm surges may have new characteristics due to the changes in the local geometry.This paper aims to find out these new characteristics by primarily investigating the influence of the changes in the local geometry on storm surges with numerical methods.20 scenarios were constructed based on the track and inten-sity of the cold-air outbreaks to describe the actual situation.By analyzing the model results of the control scenarios,it is found that the main changes of the maximum surge elevation occur in the Bohai Bay and the Laizhou Bay.At the top of the Bohai Bay,the maximum surge elevation is obviously decreased,while in the Laizhou Bay,it is enhanced by the growing Yellow River Delta.This,however,does not suggest that the storm surges in the Laizhou Bay become more serious.A comparison of the risk assessment of storm surges in the Tanggu,Huanghua and Yangjiaogou regions shows that the risk of storm surges in these coastal areas is lightened by the evolvement of the coastal geometry.Particularly near Yangjiaogou,though the maximum surge elevation becomes higher to subject more areas to risk,the risk is still reduced by the evolvement of the Yellow River Delta. 展开更多
关键词 storm surge cold-air outbreak Bohai Sea Caofeidian: Yellow River Delta
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Effects of tide-surge interactions on storm surges along the coast of the Bohai Sea, Yellow Sea, and East China Sea 被引量:2
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作者 XU JunLi ZHANG YuHong +2 位作者 CAO AnZhou LIU Qiang LV XianQing 《Science China Earth Sciences》 SCIE EI CAS CSCD 2016年第6期1308-1316,共9页
A two-dimensional coupled tide-surge model was used to investigate the effects of tide-surge interactions on storm surges along the coast of the Bohai Sea, Yellow Sea, and East China Sea. In order to estimate the impa... A two-dimensional coupled tide-surge model was used to investigate the effects of tide-surge interactions on storm surges along the coast of the Bohai Sea, Yellow Sea, and East China Sea. In order to estimate the impacts of tide-surge interactions on storm surge elevations, Typhoon 7203 was assumed to arrive at 12 different times, with all other conditions remaining constant. This allowed simulation of tide and total water levels for 12 separate cases. Numerical simulation results for Yingkou, Huludao, Shijiusuo, and Lianyungang tidal stations were analyzed. Model results showed wide variations in storm surge elevations across the 12 cases. The largest difference between 12 extreme storm surge elevation values was of up to 58 cm and occurred at Yingkou tidal station. The results indicate that the effects of tide-surge interactions on storm surge elevations are very significant. It is therefore essential that these are taken into account when predicting storm surge elevations. 展开更多
关键词 Storm surges Astronomical tides Tide-surge interactions Typhoon 7203 Coupled tide-surge model
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