| 一次雪后大雾天气过程的中尺度分析 |
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| 引用本文： | 陶林科,江雁,桑建人,杨侃,倪丽霞,周翠芳.一次雪后大雾天气过程的中尺度分析[J].宁夏工程技术,2010,9(4):297-302. |
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| 作者姓名： | 陶林科 江雁 桑建人 杨侃 倪丽霞 周翠芳 |
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| 作者单位： | [1]宁夏昊忠市气象局,宁夏吴忠751100 [2]宁夏气象防灾减灾重点实验室,宁夏银川750002 [3]宁夏石嘴山市气象局,宁夏石嘴山753000 |
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| 基金项目： | 中国气象局新技术推广项目，宁夏科技攻关项目 |
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| 摘 要： | 利用常规观测资料和中尺度模式（WRF—V2．2）预报产品，对2009年2月3日宁夏中北部雪后大雾天气过程进行分析．结果表明，雪停天气转晴、温度快速回升、积雪融化使近地面层空气接近饱和、风速较小，为大雾的形成提供了有利的条件；大气层结稳定、水汽充沛、地面的长波辐射冷却是形成辐射雾的主要原因；深厚逆温层的维持对大雾持续起着决定性作用．
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| 关 键 词： | 大雾 中尺度 分析 |
Mesoscale analysis of a heavy fog weather after snow |
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| TAO Linke,JIANG Yan,SANG Jianren,YANG Kan,NI Lixia,ZHOU Cuifang.Mesoscale analysis of a heavy fog weather after snow[J].Ningxia Engineering Technology,2010,9(4):297-302. |
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| Authors: | TAO Linke JIANG Yan SANG Jianren YANG Kan NI Lixia ZHOU Cuifang |
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| Affiliation: | 1.Wuzhong Meteorological Bureau of Ningxia,Wuzhong 751100,China; 2.Key Laboratory of Meteorological Disaster Preventing and Reducing of Ningxia,Yinchuan 750002,China; 3.Shizuishan Meteorological Bureau of Ningxia,Shizuishan 753000,China) |
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| Abstract: | The weather,which was a heavy fog after snow in the middle north of Ningxia on February 3,2009,is analyzed by using routine meteorological data and mesoscale model forecast products（WRF-V2.2）.The result shows that the favorable condition for forming heavy fog weather is that the snowy day fairs up,temperature rises rapidly,air vapor approaches saturation above ground surface for the melt snow and less wind speed.The main reason is stable atmospheric stratification,plentiful water vapor and long-wave radiative cooling.Maintenance of deep inversion layer plays a decisive role in the continuous heavy fog. |
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| Keywords: | heavy fog mesoscale analysis |
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