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Spatiotemporal Variations of Precipitation in the Southern Part of the Heihe River Basin (China), 1984-2014
Zhang, Xuezhen1,2; Li, Pei3; Li, Deshuai4
2018-04-01
Source PublicationWATER
ISSN2073-4441
Volume10Issue:4Pages:15
Corresponding AuthorZhang, Xuezhen(xzzhang@igsnrr.ac.cn)
AbstractLocal precipitation variations in the context of global warming are a hot topic in the climate change research community. Using daily precipitation data spanning from 1984 to 2014 from 25 meteorological stations, the spatiotemporal variations of precipitation were analyzed for the southern part of Heihe River Basin (HRB), which is the second-largest inland river basin in Northwest China. Linear trend analysis, empirical orthogonal function (EOF) analysis, the Mann-Kendall test, and the moving t-test were employed in the study. Results showed that the regional annual precipitation exhibited an increasing trend with a slope of 13.1 mm per decade from 1984 to 2014. The increasing trend was detected at 21 sites and the first EOF illustrating the regional increasing trend explained 51.8% of the total variance. The increasing trend of annual precipitation was mainly due to an increase in autumn precipitation, while summer precipitation exhibited a weak declining trend and spring-winter precipitation remained unchanged. Moreover, the increasing precipitation trend was mainly caused by an abrupt increase around 1997, when the global warming hiatus occurred. Through 1997, the atmospheric circulation and physical structure, such as vertical upward motion, vapor transmission, and its convergence changed to be more favorable for precipitation in autumn, but unfavorable for precipitation in summer in the HRB.
Keywordprecipitation spatiotemporal variations global warming atmospheric circulation the Heihe River Basin Northwest China
DOI10.3390/w10040410
WOS KeywordGLOBAL-WARMING HIATUS
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China on Global Change[2016YFA0600401] ; National Key R&D Program of China on Global Change[2017YFA0603301] ; National Natural Science Foundation of China[41471171] ; National Natural Science Foundation of China[91425304] ; Youth Innovation Promotion Association CAS[2015038] ; IGSNRR[2015RC101]
Funding OrganizationNational Key R&D Program of China on Global Change ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; IGSNRR
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000434954900064
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54683
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Xuezhen
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Unit 95810 PLA, Beijing 100010, Peoples R China
4.Unit 93995 PLA, Xian 710300, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xuezhen,Li, Pei,Li, Deshuai. Spatiotemporal Variations of Precipitation in the Southern Part of the Heihe River Basin (China), 1984-2014[J]. WATER,2018,10(4):15.
APA Zhang, Xuezhen,Li, Pei,&Li, Deshuai.(2018).Spatiotemporal Variations of Precipitation in the Southern Part of the Heihe River Basin (China), 1984-2014.WATER,10(4),15.
MLA Zhang, Xuezhen,et al."Spatiotemporal Variations of Precipitation in the Southern Part of the Heihe River Basin (China), 1984-2014".WATER 10.4(2018):15.
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