Trends in hail in China during 1960–2005
Trends in hail in China during 1960–2005
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DOI：
10.1029/2008gl034067
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发表时间：
2008-07
影响因子：
5.2
通讯作者：
Baoguo Xie;Qinghong Zhang;Yuqing Wang
中科院分区：
文献类型：
--
作者：
Baoguo Xie;Qinghong Zhang;Yuqing Wang
利用1960 ~ 2005年46年间中国冰雹频率的年际变化和趋势，分析了中国冰雹频率的年际变化特征。所有分析都是基于中国国家气象信息中心（NMIC）发布的冰雹观测资料和业务大气探测资料的综合收集。结果表明，从1960年到1980年代初，年平均冰雹日数（AHD）没有变化趋势，但此后有明显的减少趋势。但各站AHD的变化趋势不同，表现出明显的区域依赖性。对流可用势能（CAPE），垂直风切变强度和平均冻结高度（FLH）进行了分析，以了解观测到的冰雹频率的长期趋势。
The annual variation and trend in hail frequency during a 46‐yr period from 1960 to 2005 in China are documented in this study. All analyses are based on a comprehensive collection of observational hail data and operational atmospheric sounding data released by the National Meteorological Information Center (NMIC) of China. The results show no trend in the mean Annual Hail Days (AHD) from 1960 to early 1980s but a significant decreasing trend afterwards. The different trend of the AHD at each station displays a marked regional dependence across China, however. Convective Available Potential Energy (CAPE), strength of vertical wind shear, and mean Freezing‐Level Height (FLH) are analyzed to understand the observed long‐term trends in hail frequency.