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Complex network analysis of climate change in the Tarim River Basin, Northwest China
Received:February 27, 2017  Revised:April 28, 2017  Click here to download the full text
Citation of this paper:ZuHan Liu,JianHua Xu,WeiHong Li,2017.Complex network analysis of climate change in the Tarim River Basin, Northwest China.Sciences in Cold and Arid Regions,9(5):476~487.
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Author NameAffiliationE-mail
ZuHan Liu Jiangxi Provincial Key Laboratory of Water Information Cooperative Sensing and Intelligent Processing, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China;Research Center for East-West Cooperation in China, East China Normal University, Shanghai 200241, China  
JianHua Xu Key Laboratory of Geographic Information Science(Ministry of Education), School of Geographic Sciences, East China Normal University, Shanghai 200241, China;Research Center for East-West Cooperation in China, East China Normal University, Shanghai 200241, China jhxu@geo.ecnu.edu.cn 
WeiHong Li State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China  
基金项目:This work was supported by the Science and Technology Project of Jiangxi Provincial Department of Education (No. GJJ161097), the Open Foundation of the State Key Laboratory of Desert and Oasis Ecology (No. G2014-02-07), the National Natural Science Foundation of China (41630859), the Open Research Fund of Jiangxi Province Key Laboratory of Water Information Cooperative Sensing and Intelligent Processing (No. 2016WICSIP012), and the Key Project of Jiangxi Provincial Department of Science and Technology (No. 20161BBF60061).
 
Abstract:The complex network theory provides an approach for understanding the complexity of climate change from a new perspective. In this study, we used the coarse graining process to convert the data series of daily mean temperature and daily precipitation from 1961 to 2011 into symbol sequences consisting of five characteristic symbols (i.e., R, r, e, d and D), and created the temperature fluctuation network (TFN) and precipitation fluctuation network (PFN) to discover the complex network characteristics of climate change in the Tarim River Basin of Northwest China. The results show that TFN and PEN both present characteristics of scale-free network and small-world network with short average path length and high clustering coefficient. The nodes with high degree in TFN are RRR, dRR and ReR while the nodes with high degree in PFN are rre, rrr, eee and err, which indicates that climate change modes represented by these nodes have large probability of occurrence. Symbol R and r are mostly included in the important nodes of TFN and PFN, which indicate that the fluctuating variation in temperature and precipitation in the Tarim River Basin mainly are rising over the past 50 years. The nodes RRR, DDD, ReR, RRd, DDd and Ree are the hub nodes in TFN, which undertake 19.71% betweenness centrality of the network. The nodes rre, rrr, eee and err are the hub nodes in PFN, which undertake 13.64% betweenness centrality of the network.
keywords:climate change  complex networks  coarse graining process  temperature fluctuation network  precipitation fluctuation network  Northwest China
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