| 2010年2月一次冬季黄海海雾的成因分析 |
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| 引用本文： | 杨伟波,张苏平,薛德强.2010年2月一次冬季黄海海雾的成因分析[J].中国海洋大学学报(自然科学版),2012(Z1):24-33. |
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| 作者姓名： | 杨伟波 张苏平 薛德强 |
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| 作者单位： | 中国海洋大学物理海洋实验室海洋-大气相互作用与气候实验室;山东省气象局 |
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| 基金项目： | 国家自然科学基金项目(41175006);教育部博士点基金项目(20090132110008);国家重点基础研究发展规划项目(2012CB955600)资助 |
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| 摘 要： | 利用青岛浮标观测、自动气象站观测、Micaps站点观测、L波段雷达等观测数据,New Generation SST,OI-SST和NCEP提供的FNL和CFSR再分析数据。并利用中尺度模式WRF对这次冬季海雾进行诊断分析。得到以下结论:(1)观测表明,这次海雾首先在黄海北部生成,是由于冷暖空气在黄海海域交汇,增大相对湿度,形成混合雾。在22日12:00时(UTC)之后,暖平流北上,冷平流消失。海雾逐渐转成平流冷却雾。青岛出现的海雾是从黄海发展过来的,并且为平流冷却雾。(2)在黄海,冷暖空气混合增大相对湿度,生成混合雾。与后期的平流冷却雾相比,混合雾的高度明显偏低。(3)海温异常偏低。在2010年2月渤海大面积结冰,海温偏低可能与融冰有关系。(4)模式结果表明,混合雾与冷水域的关系密切。平流冷却雾与冷水域的位置基本一致。混合雾和平流冷却雾都受海温影响较大。混合雾雾区变化很大,因为冷空气在移动过程中变性,不利于混合雾生成。冷海面对平流冷却雾起着很关键的作用。这次冬季海雾与春夏季黄海海雾的不同点在:这次海雾的发生机制不同于典型的春夏季黄海海雾。春夏季典型的黄海海雾主要是平流冷却雾,而这次冬季海雾在生成上首先是混合雾,后来转为平流冷却雾。
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| 关 键 词： | 海温 混合雾 平流冷却雾 数值试验 MTSAT-1R |
The Mechanism of Winter Sea Fog over Yellow Sea in February,2010 |
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| YANG Wei-Bo,ZHANG Su-Ping,XUE De-Qiang.The Mechanism of Winter Sea Fog over Yellow Sea in February,2010[J].Periodical of Ocean University of China,2012(Z1):24-33. |
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| Authors: | YANG Wei-Bo ZHANG Su-Ping XUE De-Qiang |
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| Institution: | 1.Physical Oceanography Lab.,Ocean-Atmosphere Interaction and Climate Lab.,Ocean University of China,Qingdao 266100,China;2.Shandong Meteorological Observatory,Jinan 250000,China) |
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| Abstract: | In this paper various observational data is to be used and a three-dimensional mesoscale model WRF is employed to simulate and diagnose this sea fog event occurred over the Yellow Sea.We can get the following conclusions:(1) The fog at first started in the north of Yellow Sea.However,it formed because cold and warm air masses mixed together and made relative humidity increase,to form the mixing fog.But after 12(UTC) 22,warm advection moved northward and cold advection disappeared.At this time,it slowly turned into advection cooling fog.Sea fog appeared in Qingdao comes from the Yellow Sea,and is advection cooling fog.(2) In the Yellow Sea,cold and warm air masses mixed together and made the relative humidity increase,to form the mixing fog.The height of mixed fog was significantly lower compared with the advection cooling fog.(3) Sea surface temperature anomaly was lower.In February 2010,the Bohai Sea was frozen widely and the lower sst anomaly may be associated with melting ice.(4) The model results show that,the mixing fog is closely related to cold waters.The advection cooling fog is consistent with the location of cold waters.The mixing fog and advection cooling fog are influenced by sst.The mixing fog changed dramatically,because cold air denaturalize during the moving and is not conducive to generate mixing fog.The cold sea plays a key role in the advection cooling fog.The winter fog is different from spring and summer fog.Differences are as follows: The mechanism of this winter fog is different from typical spring and summer fog.The spring and summer fog is almost advection cooling fog,while this winter fog is different.In the beginning,it’s the mixed fog,and then turns into advection cooling fog. |
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| Keywords: | sea surface temperature mixing fog advection cooling fog numerical simulation MTSAT-1R |
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