DOI: 10.1007/s00382-015-2601-6
Scopus记录号: 2-s2.0-84955659745
论文题名: Spatiotemporal characteristics and synchronization of extreme rainfall in South America with focus on the Andes Mountain range
作者: Boers N. ; Bookhagen B. ; Marwan N. ; Kurths J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期: 2017-01-02 起始页码: 601
结束页码: 617
语种: 英语
英文关键词: Complex networks
; Extreme rainfall
; South American monsoon system
; Synchronization
英文摘要: The South American Andes are frequently exposed to intense rainfall events with varying moisture sources and precipitation-forming processes. In this study, we assess the spatiotemporal characteristics and geographical origins of rainfall over the South American continent. Using high-spatiotemporal resolution satellite data (TRMM 3B42 V7), we define four different types of rainfall events based on their (1) high magnitude, (2) long temporal extent, (3) large spatial extent, and (4) high magnitude, long temporal and large spatial extent combined. In a first step, we analyze the spatiotemporal characteristics of these events over the entire South American continent and integrate their impact for the main Andean hydrologic catchments. Our results indicate that events of type 1 make the overall highest contributions to total seasonal rainfall (up to 50%). However, each consecutive episode of the infrequent events of type 4 still accounts for up to 20% of total seasonal rainfall in the subtropical Argentinean plains. In a second step, we employ complex network theory to unravel possibly non-linear and long-ranged climatic linkages for these four event types on the high-elevation Altiplano-Puna Plateau as well as in the main river catchments along the foothills of the Andes. Our results suggest that one to two particularly large squall lines per season, originating from northern Brazil, indirectly trigger large, long-lasting thunderstorms on the Altiplano Plateau. In general, we observe that extreme rainfall in the catchments north of approximately 20∘S typically originates from the Amazon Basin, while extreme rainfall at the eastern Andean foothills south of 20∘S and the Puna Plateau originates from southeastern South America. © 2015, Springer-Verlag Berlin Heidelberg. 资助项目: DFG, Fundação de Amparo à Pesquisa do Estado de São Paulo
; FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53873
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Potsdam Institute for Climate Impact Research, Telegraphenberg A 31, Potsdam, Brandenburg, Germany; Department of Physics, Humboldt University Berlin, Berlin, Germany; Institute of Earth- and Environmental Sciences, University of Potsdam, Brandenburg, Germany; Department of Control Theory, Nizhny Novgorod State University, Nizhny Novgorod, Russian Federation; Institute for Complex Systems and Mathematical Biology, University of Aberdeen, Aberdeen, United Kingdom
Recommended Citation:
Boers N.,Bookhagen B.,Marwan N.,et al. Spatiotemporal characteristics and synchronization of extreme rainfall in South America with focus on the Andes Mountain range[J]. Climate Dynamics,2016-01-01,46(2017-01-02)