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中国大城市极端强降水事件变化的初步分析
引用本文:王萃萃,翟盘茂.中国大城市极端强降水事件变化的初步分析[J].气候与环境研究,2009,14(5):553-560.
作者姓名:王萃萃  翟盘茂
作者单位:1. 气象出版社,北京,100081
2. 中国气象局,北京,100081
基金项目:国家自然科学基金项目"近50年中国降水频率、强度和总量变化",国家科技支撑计划课题"气候变化的检测和预估技术研究","近百年来我国极端天气气候事件变化特征及其影响" 
摘    要:利用中国753个台站1951~2005年的逐日降水资料,初步分析了人口在一百万以上的大城市极端强降水事件的变化特征及其与周围的区别.得到以下主要结论:大城市极端降水事件的变化受所在区域的变化影响很大,不同地区大城市又具有其独特的变化特点,半数以上的大城市极端降水强度和频数的变化趋势比周围大.大体上,北方尤其是在华北南部,大城市极端降水强度和频数增加的趋势比周围大;与华北地区整体上的减弱趋势不同,华北东南部大城市极端降水强度呈较明显的增强趋势.

关 键 词:大城市  极端降水  变化

Changes of Precipitation Extremes in China's Large Cities
WANG Cuicui,ZHAI Panmao.Changes of Precipitation Extremes in China's Large Cities[J].Climatic and Environmental Research,2009,14(5):553-560.
Authors:WANG Cuicui  ZHAI Panmao
Abstract:Characteristics of precipitation extremes and the differences between the large cities with a population over one million and the surrounding stations with a population below 500 thousand were investigated based on daily precipitation data of 753 stations of China from 1951 to 2005. Results reveal that changes of precipitation extremes at large city stations display similar regional features. Moreover, the large city stations also have their own characteristic of change. More than a half of the large city stations experienced a more obvious change of the extreme precipitation than the surrounding stations. On the whole, if extreme precipitation intensity and frequency at the large city stations were increased, the increasing trends were more obvious than the surrounding stations. Most of such large city stations are in northern China, especially in the south of North China. Different from the decrease trends in North China, mean extreme precipitation intensity at the large city stations in southern North China has increased obviously.
Keywords:large city  precipitation extremes  change
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