文献类型：期刊文献

英文题名：Analysis of Precipitation Extremes in the Qinghai-Tibetan Plateau, China: Spatio-Temporal Characteristics and Topography Effects

作者：Ge, Genbatu[1,2,3] Shi, Zhongjie[1] Yang, Xiaohui[1] Hao, Yuguang[2,3] Guo, Hao[1] Kossi, Fandjinou[4,5] Xin, Zhiming[2,3] Wei, Wei[4] Zhang, Zhiyong[1] Zhang, Xiao[1] Liu, Yanshu[1] Liu, Junhui[6]

第一作者：Ge, Genbatu

通信作者：Shi, ZJ[1];Yang, XH[1]|[a0005d302b743c401205f]杨晓晖;

机构：[1]Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Desert Forestry, Dengkou 015200, Peoples R China;[3]Inner Mongolia State Forestry Adm, Desert Ecosyst Res Stn, Dengkou 015200, Peoples R China;[4]Beijing Forestry Univ, Coll Water & Soil Conservat, Beijing 100083, Peoples R China;[5]Univ Lome, Lab Biol Vegetale, BP1515, Lome, Togo;[6]Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China

年份：2017

卷号：8

期号：7

外文期刊名：ATMOSPHERE

收录：;EI(收录号：20173104002482);Scopus(收录号：2-s2.0-85026287578);WOS:【SCI-EXPANDED(收录号:WOS:000406457400016)】；

基金：This research was supported by the Fundamental Research Funds of CAF (CAFYBB2017ZA006), the International Science & Technology Cooperation Program of China (2015DFR31130), the National Key Research and Development Program of China (2016YFC0500801; 2016YFC0500804; 2016YFC0500908), and the National Natural Science Foundation of China (31670715; 41471029; 41271033; 41371500).

语种：英文

外文关键词：extreme precipitation; spatiotemporal trend; Qinghai-Tibetan plateau; Mann-Kendall test; Sen's slope estimator; topography

摘要：Although precipitation extremes exert a major influence on populations and the environment, trend analysis for the entire Qinghai-Tibetan plateau (QTP) has not previously been undertaken. In this study, meteorological data from 83 weather stations was used to analyze the temporal trends and spatial distribution of 10 extreme precipitation indices over the QTP during 1975-2014. The Mann Kendall test and Sen's slope estimator were used to determine significances and magnitudes of station trends. Spatially, stations recording increasing trends were mainly distributed in the southwestern, central and northern regions. Stations with decreasing trends were centered on the eastern and southeastern areas. Temporally, all indices had an increasing trend except for consecutive dry days (CDD) and consecutive wet days (CWD) during the study period. The contribution of extreme precipitation to total precipitation showed a significant increasing trend. These findings may be due to the complex interaction between the large-scale circulation and topography. In general, the changes of extreme precipitation indicated an enhanced tendency, with the frequency, intensity and amount of heavy precipitation increasing over time. Furthermore, altitude dependency of extreme precipitation does not exist in QTP, with topography effects on changes in precipitation extremes being more obvious in the higher elevation, flat, and hill stations.