DOI: 10.1029/2018JD028485
Scopus记录号: 2-s2.0-85050387480
论文题名: Moisture Sources for Wintertime Extreme Precipitation Events Over South China During 1979–2013
作者: Huang W. ; He X. ; Yang Z. ; Qiu T. ; Wright J.S. ; Wang B. ; Lin D.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 13 起始页码: 6690
结束页码: 6712
语种: 英语
英文关键词: characteristic trajectory
; extreme precipitation
; favorable circulation pattern
; Lagrangian approach
; moisture recycling
; moisture source
Scopus关键词: anticyclone
; atmospheric circulation
; atmospheric moisture
; boundary layer
; cyclone
; Lagrangian analysis
; trajectory
; winter
; China
; Pacific Ocean
; Pacific Ocean (Northwest)
; South China Sea
; Yangtze River
英文摘要: A Lagrangian approach is applied to explore the evaporative moisture sources within the boundary layer for 103 wintertime extreme precipitation events over South China during 1979–2013. Oceanic sources provided about 67.7% of the moisture for these extreme precipitation events, with terrestrial sources providing the remaining parts. The five most important moisture source regions were the South China Sea (30.9% of the total moisture source within boundary layer), the western North Pacific (20.2%), the East China Sea (14.9%), South China (i.e., moisture recycling, in which local evapotranspiration supplies moisture for precipitation; 14.6%), and southeastern Asia (11.5%). Characteristic trajectories linking moisture from the key source regions to South China are identified. All of these trajectories entered China south of the Yangtze River, with characteristic time scales ranging from 2.8 to 5.7 days. The critical circulation patterns for moisture transport from different source regions are also determined. Cyclonic anomalies over South China and its surrounding continental areas favored moisture transport from the South China Sea and southeastern Asia. To leading order, changes in the relative contributions of these and other key moisture source regions were associated with changes in the location or development pattern of these cyclonic anomalies. Beyond these relationships, the presence of anticyclonic anomalies over the western North Pacific favored moisture transport from the western North Pacific, while the absence of these anomalies favored moisture recycling within South China and moisture transport from the East China Sea. ©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/113518
Appears in Collections: 气候减缓与适应
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作者单位: Ministry of Education Key Laboratory for Earth System Modeling, and Department of Earth System Science, Tsinghua University, Beijing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Huang W.,He X.,Yang Z.,et al. Moisture Sources for Wintertime Extreme Precipitation Events Over South China During 1979–2013[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(13)