DOI: 10.1002/joc.5310
论文题名: Characterization of rainstorm modes along the upper mainstream of Yangtze River during 2003–2016
作者: Wu X. ; Guo S. ; Liu D. ; Hong X. ; Liu Z. ; Liu P. ; Chen H.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 4 起始页码: 1976
结束页码: 1988
语种: 英语
英文关键词: rainstorm mode
; spatiotemporal change
; the upper mainstream of Yangtze River
Scopus关键词: Flood control
; Reservoirs (water)
; Rivers
; Thunderstorms
; Fuzzy mode identification
; Mann-Kendall test
; Potential change
; Rainstorm mode
; Reservoir operation
; Spatio-temporal changes
; Time distribution
; Yangtze River
; Storms
; extreme event
; precipitation intensity
; rainfall
; rainstorm
; spatial variation
; temporal variation
; China
; Yangtze River
英文摘要: Accurate knowledge of extrveme rainfall mode (time distribution) is crucial for many fields, such as hydraulic structure design, flood control and reservoir operation. The rainstorm modes along the upper mainstream of Yangtze River (UMYR) during 2003–2016 were investigated by fuzzy mode identification method, linear regression and Mann–Kendall test. Results show that unimodal rainstorms are more frequently seen than bimodal ones, and those with late peaks are dominant along UMYR. Moreover, rainstorms tend to centre on downstream UMYR. Trend analysis reveals moderate decreases in regional mean rainstorm frequency and amount, but an increase in regional mean peak intensity. Unimodal rainstorms with early peaks and bimodal rainstorms with early and late peaks have increased significantly. However, unimodal rainstorms with late peaks and bimodal rainstorms with middle and late peaks show decreases. Spatially, decreases in rainstorm frequency, amount and peak intensity are found in downstream, while peak intensity shows an increasing trend in the upper UMYR. Along the river reach, mean rainstorm levels are generally below 100 mm. In comparison to bimodal rainstorms, unimodal rainstorms are more intense, and those with middle peaks are considered most intense with mean levels of peak intensity generally ranging from 25 to 50 mm h−1. For other rainstorm modes, the mean levels of peak intensity are generally below 25 mm h−1. Finally, we found there is a potential change in the dominant rainstorm mode in downstream UMYR, where unimodal rainstorms with early peaks have become the prevalent local rainstorm mode in recent years, replacing unimodal rainstorms with late peaks. © 2017 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117058
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, China; Hubei Provincial Collaborative Innovative Center for Water Resources Security, Wuhan University, China
Recommended Citation:
Wu X.,Guo S.,Liu D.,et al. Characterization of rainstorm modes along the upper mainstream of Yangtze River during 2003–2016[J]. International Journal of Climatology,2018-01-01,38(4)