globalchange  > 影响、适应和脆弱性
DOI: 10.1007/s00382-017-3929-x
Scopus记录号: 2-s2.0-85030698019
论文题名:
Temporal evolution of the spatial covariability of rainfall in South America
作者: Ciemer C.; Boers N.; Barbosa H.M.J.; Kurths J.; Rammig A.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 51, 期:2018-01-02
起始页码: 371
结束页码: 382
语种: 英语
英文关键词: Complex networks ; Correlation measures ; Rainfall ; South American monsoon ; Teleconnections
Scopus关键词: convergence ; correlation ; monsoon ; rainfall ; spatial variation ; synoptic meteorology ; teleconnection ; temporal variation ; Amazon Basin ; Atlantic Ocean ; Atlantic Ocean (South) ; South America
英文摘要: The climate of South America exhibits pronounced differences between rainy and dry seasons, associated with specific synoptic features such as the establishment of the South Atlantic convergence zone. Here, we analyze the spatiotemporal correlation structure and in particular teleconnections of daily rainfall associated with these features by means of evolving complex networks. A modification of Pearson’s correlation coefficient is introduced to handle the intricate statistical properties of daily rainfall. On this basis, spatial correlation networks are constructed, and new appropriate network measures are introduced in order to analyze the temporal evolution of the networks’ characteristics. We particularly focus on the identification of coherent areas of similar rainfall patterns and previously unknown teleconnection structures between remote areas. We show that the monsoon onset is characterized by an abrupt transition from erratic to organized regional connectivity that prevails during the monsoon season, while only the onset times themselves exhibit anomalous large-scale organization of teleconnections. Furthermore, we reveal that the two mega-droughts in the Amazon basin were already announced in the previous year by an anomalous behavior of the connectivity structure. © 2017, Springer-Verlag GmbH Germany.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109232
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Potsdam Institute for Climate Impact Research, Potsdam, Germany; Department of Physics, Humboldt University, Berlin, Germany; Geosciences Department, École Normale Supérieure, Paris, France; Department of Physics, University of São Paulo, São Paulo, Brazil; 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; TUM School of Life Sciences Weihenstephan, Technical University of Munich, Munich, Germany

Recommended Citation:
Ciemer C.,Boers N.,Barbosa H.M.J.,et al. Temporal evolution of the spatial covariability of rainfall in South America[J]. Climate Dynamics,2018-01-01,51(2018-01-02)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Ciemer C.]'s Articles
[Boers N.]'s Articles
[Barbosa H.M.J.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Ciemer C.]'s Articles
[Boers N.]'s Articles
[Barbosa H.M.J.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Ciemer C.]‘s Articles
[Boers N.]‘s Articles
[Barbosa H.M.J.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.