| 贵州主汛期极端降水事件及其环流特征分析 |
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| 引用本文： | 张艳梅,黄锋,钟静,杨宏宇.贵州主汛期极端降水事件及其环流特征分析[J].热带地理,2009,29(5). |
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| 作者姓名： | 张艳梅 黄锋 钟静 杨宏宇 |
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| 作者单位： | 1. 贵州六盘水市气象局,贵州,六盘水,553001
2. 广东省东莞市气象局,广东,东莞,523009 |
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| 摘 要： | 利用贵州地区52个测站1961-2006年历年主汛期(6-8月)逐日降水资料,定义了不同台站的极端降水阈值,统计了贵州近46年主汛期极端降水事件发生的频次,并分析了极端降水的时空分布特征、周期振荡特征以及极端降水事件典型多年、少年的环流特征.结果表明:贵州主汛期极端降水自北向南逐渐增大,极端降水事件存在着明显的年际、年代际变化特征,并存在2.9 a、20 a的周期振荡特征,在贵州主汛期极端降水事件偏多和偏少时期,其环流特征存在着显著的差异.
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| 关 键 词： | 贵州 主汛期 极端降水 环流特征 |
Characteristics of Extreme Precipitation Events and Their Circulations in Guizhou |
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| ZHANG Yanmei,JIANG Zhihong,HUANG Feng,ZHONG Jing.Characteristics of Extreme Precipitation Events and Their Circulations in Guizhou[J].Tropical Geography,2009,29(5). |
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| Authors: | ZHANG Yanmei JIANG Zhihong HUANG Feng ZHONG Jing |
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| Affiliation: | 1.Liupanshui Meteorological Bureau of Guizhou Province;Liu Panshui 553001;China;2.Key Laboratory of Meteorological Disaster of Jiangsu Province;Nanjing University of Information Science Technology;NanJing 210044;3.Dongguan Meteorological Bureau of Guangdong Province;Dongguan 523009;China |
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| Abstract: | Based on the daily precipitation data collected in the summer seasons from 52 observational stations in Guizhou during 1961-2006,the threshold value of extreme precipitation,the frequency of extreme precipitation events and their circulations are analyzed in this paper.The results indicate that the threshold values of extreme precipitation are gradually increasing from north to south in Guizhou and the inter-annual variations of the frequency are remarkable.There are periodical variations of 2.9 years and 2... |
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| Keywords: | Guizhou flood season extreme precipitation event circulation |
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