Change of precipitation intensity spectra at different spatial scales under warming conditions

查看全文 作　　者：WU [1]FuTing;FU [1,2]CongBin

机构地区：[1]Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University;[2]START/TEA, Institute of Atmospheric Physics, Chinese Academy of Sciences

出　　处：《Chinese Science Bulletin》索引2013年第58卷第12期,共10页

基　　金：supported by the National Basic Research Program of China (2011CB952002);the National Natural Science Foundation of China (40810059003);the project funded by the Priority Academy Program Development of Jiangsu Higher Education Institutions 摘　　要：The long-term change of the whole spectra of precipitation intensity in China is examined using observed daily data recorded at 477 surface stations for the period from 1961 to 2008. The results show a spatially coherent decrease of trace precipitation despite different reduction magnitudes among the regions. For measurable precipitation, significant regional and seasonal characteristics are observed. In autumn, the whole measurable precipitation decreased over Eastern China (east of 98°E). In summer and winter, a significant increase of heavy precipitation and decrease of light precipitation are detected south of Eastern China. In Western China, measurable precipitation is found to have increased in all four seasons. Composite analysis reveals a quasi-linear relationship between increasing surface temperature and precipitation on a global scale. The responses of precipitation at different intensities to the increased temperature are distinct, with a significant spectra-shifting from light to heavy precipitation. Compared with precipitation over the ocean, the amplification of heavy precipitation over land is relatively less, most likely constrained by the limited water supply. The response of regional precipitation to global warming shows greater uncertainties compared with those on the global scale, perhaps due to interference by more complex topography and land cover, as well as human activities, among other factors. 关键词：降水强度气候变暖空间尺度季节性特征中国东部中国西部地区表面温度全球范围

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Change of precipitation intensity spectra at different spatial scales under warming conditions

参考文献(33)

引证文献(11)

耦合文献(1972)

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