摘要
基于中科院青藏高原所提供的CMFD资料,研究者对中国地区近40年来的降水结构时空变化特征进行了分析。结果表明,1979年~2018年间我国年均降水量呈现出较为明显的增长趋势,且未来几年持续增加的可能性极大;近40年来我国汛期降水量占全年降水总量的比例大体稳定,但有微弱下降趋势;华东、华中和华南等地区近5年来降水量增加显著;西南、西北及东北等地区降水年内分配不均匀性下降明显;华东和华南等地区发生极端降水事件的频率及强度均有所增加。
Based on CMFD which is provided by the Institute of Tibetan Plateau Research of Chinese Academy of Sciences,the variation characteristics of precipitation structure over past 40 years in China are analyzed.The results show that,the average annual precipitation has an obvious growth trend from 1979 to 2018,and the possibility of continuous increase in the next few years is great;and the proportion of precipitation in flood season in total annual precipitation is generally stable,and there is a slight trend of decline.By analyzing the spatial distribution of precipitation,it is found that,the precipitations in eastern,central and southern China have increased significantly in the past five years;the distribution unevenness of precipitation in southwest,northwest and northeast China are decreased obviously;and the frequency and intensity of extreme precipitation events have increased in eastern and southern China.
作者
杜懿
王大洋
阮俞理
莫崇勋
王大刚
DU Yi;WANG Dayang;RUAN Yuli;MO Chongxun;WANG Dagang(School of Geography and Planning,Sun Yat-sen University,Guangzhou 510275,Guangdong,China;School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,Guangxi,China)
出处
《水力发电》
北大核心
2020年第8期19-23,共5页
Water Power
基金
国家自然科学基金面上项目(51779278)
广西研究生教育创新计划项目(YCBZ2019022)。
关键词
时空变化
降水结构
极端降水
中国
temporal and spatial variation
precipitation structure
extreme precipitation
China
