文献类型：期刊文献

英文题名：Why does precipitation in northwest China show a significant increasing trend from 1960 to 2010?

作者：Li, Baofu[1,2];Chen, Yaning[2];Chen, Zhongsheng[3];Xiong, Heigang[4];Lian, Lishu[1]

第一作者：Li, Baofu

通讯作者：Li, BF[1]

机构：[1]Qufu Normal Univ, Coll Geog & Tourism, Rizhao 276826, Peoples R China;[2]Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China;[3]E China Normal Univ, Minist Educ Peoples Republ China, Key Lab Geog Informat Sci, Shanghai 200241, Peoples R China;[4]Beijing Union Univ, Coll Appl Arts & Sci, Beijing 100083, Peoples R China

第一机构：Qufu Normal Univ, Coll Geog & Tourism, Rizhao 276826, Peoples R China

通讯机构：[1]corresponding author), Qufu Normal Univ, Coll Geog & Tourism, 80 Yantai Rd, Rizhao 276826, Peoples R China.

年份：2016

卷号：167

起止页码：275-284

外文期刊名：ATMOSPHERIC RESEARCH

收录：;EI(收录号：20153701268557);Scopus(收录号：2-s2.0-84941254874);WOS:【SCI-EXPANDED(收录号:WOS:000362609300023)】；

基金：This research is supported by the National Natural Science Foundation of China (41501211), Startup Fund Scientific Research Project of Qufu Normal University (BSQD20130102), Open Found of State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (2015). We are grateful to Dr. Jose Luis Sanchez, and anonymous reviewers for their helpful comments on improving the manuscript.

语种：英文

外文关键词：Precipitation; Atmospheric circulations; Northwestern China

摘要：Based on monthly precipitation data from 74 weather stations in the arid region of northwest China, we employed statistical methods to analyse the characteristics of precipitation and investigated the relationships between precipitation and 11 atmospheric circulations. The results showed that the precipitation in northwest China had a significantly increasing trend (P < 0.01), at a rate of 0.61 mm/year, which is higher than the average rate of China (-0.16 mm/year) for the same period. Annual precipitation increased markedly after 1987, but the increase in precipitation gradually declined from north to south and from west to east. We found that the precipitation variation in spring, summer, autumn, and winter plays an important role in the yearly change, accounting for 21.6%, 42.4%, 18.4%, and 17.6%, respectively. The correlation analysis indicated that the annual precipitation revealed strong and significant associations with the West Pacific Subtropical High (WPSH, R = 0.60, P < 0.001) and the North America Subtropical High (NASH, R = 0.57, P < 0.001) from 1960 to 2010. We therefore suggest that the strengthening of the WPSH and NASH after the mid-1980s is probably the main cause for the significant increasing trend of precipitation in northwest China. (C) 2015 Elsevier B.V. All rights reserved.