| 京、津、冀区域群发性强沙尘暴分析 |
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| 引用本文： | 刘学锋,安月改,田国强.京、津、冀区域群发性强沙尘暴分析[J].地理与地理信息科学,2003,19(6):74-76. |
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| 作者姓名： | 刘学锋 安月改 田国强 |
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| 作者单位： | 河北省气候中心,河北,石家庄,050021 |
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| 基金项目： | 河北省科学技术研究与发展计划课题“风沙灾害天气监测预报技术研究”(01220602D) |
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| 摘 要： | 利用1954—2002年82个站的气象观测资料，探讨京、津、冀区域群发性强沙尘暴的认定标准，构建较完整的群发性强沙尘暴序列，并分析该地区群发性强沙尘暴的时空分布特征和气候变化趋势。近50a京、津、冀区域共出现了39例群发性强沙尘暴，河北省的冀西北高原区和石家庄、保定、衡水、沧州四市交接处饶阳一带是京、津、冀区域强沙尘暴天气的多发区。多发季节为3—5月，占全年总数的76．9％，其中4月份最多，占全年总数的51．3％。群发性强沙尘暴年代际变化呈现总体减少趋势，其发生次数、覆盖面积均是以20世纪90年代为最低值．
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| 关 键 词： | 强沙尘暴分析 群发性 时空分布 灾害性天气 |
| 文章编号： | 1672-0504(2003)06-0074-03 |
| 修稿时间： | 2003年9月8日 |
Analysis of Severe Group Dust-storms in Beijing,Tianjin and Hebei Province |
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| LIU Xue- feng,AN Yue- gai,TIAN Guo-qiang.Analysis of Severe Group Dust-storms in Beijing,Tianjin and Hebei Province[J].Geography and Geo-Information Science,2003,19(6):74-76. |
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| Authors: | LIU Xue- feng AN Yue- gai TIAN Guo-qiang |
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| Abstract: | Based on the available original dust - storms data of 82 meteorological observation stations, this paper constructed a quite complete series of severe group dust- storms in Beijing,Tianjin and Hebei region from 1954 to 2002. As a result, 39 severe group have been found and confirmed in Beijing,Tianjin and Hebei region. Based on the 39 cases, the temporal and spatial distribution characters, especially inter- decade change of severe group dust - storms were analyzed, and following viewpoint were noted: 1)The plateau in the northwest of Hebei and Raoyang area were the main areas influenced by severe group dust - storms. 2)The severe group dust-storms occured mainly in spring, accounted for 76.9% , especially in April it reached 51.3% .3) In recent 50 years, the inter-decade change of severe group dust -storms decreased in Beijing,Tianjin and Hebei region. 4)The frequency and influencing area of severe group dust - storms during 1990s were the lowest too. |
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| Keywords: | Beijing Tianjin and Hebei region severe group dust-storms temporal and spatial distribution characteristics |
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