DOI: 10.1029/2017JD028226
Scopus记录号: 2-s2.0-85048986937
论文题名: Spatiotemporal Changes in Extreme Temperature and Precipitation Events in the Three-Rivers Headwater Region, China
作者: Xi Y. ; Miao C. ; Wu J. ; Duan Q. ; Lei X. ; Li H.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 11 起始页码: 5827
结束页码: 5844
语种: 英语
英文关键词: ENSO
; extreme climate events
; PDO
; spatial distribution
; temporal trends
; the three-rivers headwater region
Scopus关键词: atmosphere-ocean system
; climate conditions
; El Nino-Southern Oscillation
; extreme event
; headwater
; index method
; Pacific Decadal Oscillation
; spatial distribution
; spatiotemporal analysis
; temperature
; temporal variation
; trend analysis
; wavelet analysis
; China
; Heilongjiang
; Sanjiang Plain
英文摘要: Extreme climate events affect sustainable development in many parts of the world. Although several studies of local extreme climate events exist, such events need more thorough investigation. Detailed studies of climatic variations that assess changes on both spatial and temporal scales are becoming increasingly necessary. In this study, 14 indices for extreme temperature and 12 indices for extreme precipitation were used to analyze the spatial distribution and temporal trends of extreme climate events in the three-rivers headwater region (TRHR), China, over the past five decades. We found that the frequency of high temperature extremes has increased, whereas the frequency of dry extremes has decreased. Statistically significant upward trends emerged for the number of warm nights (TN90p) and the number of warm days (TX90p) in the TRHR, which increased at a rate of 11.75 and 6.79 days/10 years (p < 0.05), respectively. We also found a highly significant downward trend in the number of consecutive dry days with a rate of −4.05 days/10 years across the whole region. Overall, the TRHR has become warmer and wetter over the past 50 years and the frequency of extreme events has increased. Wavelet analysis indicated that there are significant relationships between extreme climate events in the TRHR and large-scale ocean-atmosphere circulation patterns, for example, the Pacific Decadal Oscillation and the El Niño–Southern Oscillation. Our findings will help local water managers and stakeholders ensure that there are effective measures in place to adapt to and mitigate the effects of potential future climate change in the TRHR. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113724
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, China; State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, China; Key Laboratory of Agricultural Non-Point Source Pollution Control, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Recommended Citation:
Xi Y.,Miao C.,Wu J.,et al. Spatiotemporal Changes in Extreme Temperature and Precipitation Events in the Three-Rivers Headwater Region, China[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(11)