IGSNRR OpenIR
Spatiotemporal variations of extreme precipitation events at multi-time scales in the Qinling-Daba mountains region, China
Shao, Yiting1,2; Mu, Xingmin1,3; He, Yi4,5; Sun, Wenyi1,3; Zhao, Guangju1,3; Gao, Peng1,3
2019-08-10
Source PublicationQUATERNARY INTERNATIONAL
ISSN1040-6182
Volume525Pages:89-102
Corresponding AuthorHe, Yi(yihe@nwu.edu.cn)
AbstractGlobal climate change has contributed to frequent occurrence of extreme precipitation events, resulting in more severe natural disasters and restricting regional development. The Qinling-Daba mountains region (Qinba) is a transitional zone in central China with high ecological vulnerability and sensitivity. It is therefore essential to investigate the dynamics of precipitation extremes in the region. In this study, spatiotemporal variations of extreme precipitation events were analyzed at the monthly, seasonal and annual timescales based on long-term daily precipitation dataset at 30 meteorological stations over the Qinba during 1961-2017. The results indicated all of the selected ten extreme precipitation indices exhibited non-significant trends at the annual scales. Seasonally, most of extreme precipitation indices decreased in spring, autumn and winter, and increased in summer, whereas consecutive dry days (CDD) increased in all seasons. At the monthly scales, wet precipitation extremes mostly occurred in July, and upward trends of extreme precipitation events dominated in February, June, July and August except for CDD. Spatially, regionwide increases in extreme precipitation events mainly distributed in the eastern and southern Qinba, whereas the north and west were dominated by decreasing trends. Most of atmospheric circulation indices, especially Arctic Oscillation (AO), Southern Oscillation Index (SOI) and Western Pacific Index (WP) were associated with extreme precipitation events at monthly and annual scales. East Asian Summer Monsoon Index (EASMI) and South China Sea Summer Monsoon Index (SCSSMI) strongly influenced extreme precipitation events in summer over the Qinba. Our results are conducive to understanding the variations of extreme precipitation events at the monthly, seasonal and annual scales, and these will be valuable for formulating the corresponding countermeasures at different timescales over the Qinba.
KeywordExtreme precipitation events Multi-time scales Spatial pattern Temporal variation Qinling-daba mountains region Atmospheric circulation indices
DOI10.1016/j.quaint.2019.07.029
WOS KeywordRIVER-BASIN ; CLIMATE EXTREMES ; TEMPORAL VARIABILITY ; PROVINCE ; TEMPERATURE ; TRENDS ; INDEXES ; CONNECTION ; RAINFALL ; MONSOON
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Basic Resource Investigation Program[2017FY100904]
Funding OrganizationNational Science and Technology Basic Resource Investigation Program
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000487248200008
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/69506
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHe, Yi
Affiliation1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
4.Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China
5.Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Shao, Yiting,Mu, Xingmin,He, Yi,et al. Spatiotemporal variations of extreme precipitation events at multi-time scales in the Qinling-Daba mountains region, China[J]. QUATERNARY INTERNATIONAL,2019,525:89-102.
APA Shao, Yiting,Mu, Xingmin,He, Yi,Sun, Wenyi,Zhao, Guangju,&Gao, Peng.(2019).Spatiotemporal variations of extreme precipitation events at multi-time scales in the Qinling-Daba mountains region, China.QUATERNARY INTERNATIONAL,525,89-102.
MLA Shao, Yiting,et al."Spatiotemporal variations of extreme precipitation events at multi-time scales in the Qinling-Daba mountains region, China".QUATERNARY INTERNATIONAL 525(2019):89-102.
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