| 黔东南冰雹集中度与集中期的时空变化特征 |
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| 引用本文： | 顾欣,张艳梅.黔东南冰雹集中度与集中期的时空变化特征[J].中国农业气象,2010,31(4):627-632. |
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| 作者姓名： | 顾欣 张艳梅 |
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| 作者单位： | [1]贵州省黔东南州气象局,凯里556000 [2]贵州省六盘水气象局,六盘水553001 |
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| 摘 要： | 基于贵州省黔东南地区1961-2008年1-12月16个台站的冰雹观测资料,引入表征冰雹事件时间分配特征的新参数——冰雹事件集中度和集中期,在此基础上分析了黔东南冰雹事件的基本时空分配特征,并利用Morlet小波分析方法、Mann-Kendall突变检验方法和线性倾向估计方法。结果表明:黔东南冰雹事件集中度和集中期的平均和异常空间分布存在很大区域差异,根据地形划分为东西南北4个关键区域;从时间演变来看,各区冰雹事件集中度和集中期均存在较长周期变化,其长周期中又包含短周期,均表现出显著的年代际周期振荡;另一方面,冰雹事件变得越来越不集中,除南区和东北区冰雹事件集中期有推迟趋势外,其余大部地区提前趋势明显。
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| 关 键 词： | 黔东南 冰雹事件 集中度 集中期 |
Temporal and Spatial Change of Hail Concentration Degree(HCD) and Hail Concentration Period(HCP) in Southeast Guizhou |
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| GU Xin,ZHANG Yan-mei.Temporal and Spatial Change of Hail Concentration Degree(HCD) and Hail Concentration Period(HCP) in Southeast Guizhou[J].Chinese Journal of Agrometeorology,2010,31(4):627-632. |
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| Authors: | GU Xin ZHANG Yan-mei |
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| Institution: | 1.Southeast Meteorological Bureau,Kaili 556000,China;2.Liupanshui Meteorological Bureau,Liupanshui 553001) |
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| Abstract: | Based on the hail observation data of 16 stations in southeast Guizhou province from 1961 to 2008,considering to Hail Concentration Degree（HCD） and Hail Concentration Period（PCP）,temporal and spatial variation of hail in southeast Guizhou was analyzed by using the methods of Morlet analysis,Mann-Kendall catastorophe test,and linear trend estimate.The result showed that the spatial distribution of HCD and HCP had significant difference in southeast Guizhou,which could be divided into four key regions depanding on the topography.The temporal distribution of HCD and HCP had remarkable periodical variation in every region.Besides,HCP showed delayed trend in Guizhou province except for south and northeast region. |
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| Keywords: | Southeast Guizhou Hail events Hail concentration degree Hail concentration period |
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