| 2011年1月贵州冻雨天气成因分析 |
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| 引用本文： | 李丽丽,肖天贵,黄金全,冷宇.2011年1月贵州冻雨天气成因分析[J].气象科技,2013,41(6):1116-1121. |
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| 作者姓名： | 李丽丽 肖天贵 黄金全 冷宇 |
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| 作者单位： | 成都信息工程学院大气科学学院，成都 610225;成都信息工程学院大气科学学院，成都 610225;民航贵州空管分局，贵阳 550012;贵州省气象局，贵阳 550002 |
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| 基金项目： | 公益性行业（气象）科研专项资助项目（GYHY201206004）资助 |
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| 摘 要： | 利用2011年1月NCEP1°×1°6 h再分析资料和贵州省气象局提供的84个地面气象站1970—2011年冬季（12月至次年2月）资料对贵州省2011年1月持续的低温冻雨天气进行了气候统计和诊断分析。此次冻雨天气范围广，强度大，34个站气温达到40年来历史同期最低值。此次过程中的亚欧大陆环流异常的主要表现是乌拉尔山阻塞高压阶段性活跃，在里海槽前西南气流的持续补充下两次崩溃三次重建，在脊前形成深厚低压中心，导致频繁有冷空气南下影响贵州地区。
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| 关 键 词： | 冻雨 天气特征 成因 La Nina |
| 收稿时间： | 8/8/2012 12:00:00 AM |
| 修稿时间： | 2012/12/11 0:00:00 |
Analysis of Freezing Rainfall in 2011 Winter in Guizhou |
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| Li Lili,Xiao Tiangui,Huang Jinguan and Leng Yu.Analysis of Freezing Rainfall in 2011 Winter in Guizhou[J].Meteorological Science and Technology,2013,41(6):1116-1121. |
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| Authors: | Li Lili Xiao Tiangui Huang Jinguan and Leng Yu |
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| Institution: | College of Atmospheric Sciences, Chengdu University of Information and Technology, Chengdu 610225;College of Atmospheric Sciences, Chengdu University of Information and Technology, Chengdu 610225;Guizhou Air Traffic Managment Bureau, Guiyang 550012;Guizhou Meteorological Service, Guiyang 550002 |
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| Abstract: | The NCEP/NCAR reanalysis data （1°×1°，6 h） in January 2011 and the observation data in winter from 1970 to 2011 provided by Guizhou Meteorological Service are used to investigate the climatic characteristics of freezing disaster occurred in January 2011 and its causes by climate statistics and climate diagnostic methods. More than 34 stations reached the lowest temperature in the past 40 years during the freezing rain event. There were active blocking anticyclones near the Ural Mountains persistently, which were more active than the normal. They were broken down twice and rebuilt thrice, with the wet southwesterly flow brought by the strong Caspian Sea trough, supplying the warm air constantly. There was a strong and steady high existed in the front of the Urals blocking high and the frequent activities of trough, bringing cold air to the western China, which resulted in the freezing disaster in Guizhou region. |
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| Keywords: | freezing rain weather characteristic formation cause La Nina |
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