摘要
利用我国东部２５站４５ａ大一暴雨日数、暴雨日数、１ｄ最大降水量资料，分析了我国暴雨频数及一日最大降水强度时空分布特征．分析表明，８０年代后全国暴雨极端事件乎均趋势为：除华北外出现频数明显上升，强度增大．异常年份出现频数变化不明显．大暴雨频数存在１０ａ左右周期．
By the use of the number of days of rainstorms and maximum daily precipitation observed at 25 stations in the past 45 years, the time-spatial distribution offrequency of rainstorm and maximum daily precipitation are analyzed. It shows that theaverage trend of extreme rainstorm events since the 1980s is that, except north China,the frequency and intensity are obviously increased. The period of rainstorm frequencyis about 10 years.
出处
《灾害学》
CSCD
1999年第1期54-59,共6页
Journal of Catastrophology
基金
国家气象中心‘九五’科研基金
关键词
暴雨
极端事件
气候变化
中国
Rainstorm, Extreme climate events, Climatic changes, China
