The architecture of the climate network
The architecture of the climate network
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DOI：
10.1016/j.physa.2003.10.045
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发表时间：
2004-02-15
影响因子：
3.3
通讯作者：
Roebber, PJ
中科院分区：
文献类型：
--
作者：
Tsonis, AA;Roebber, PJ
我们将气候视为许多动力系统的网络，并将图论的思想应用于全局数据集来研究其集体行为。我们发现该网络具有“小世界”网络的特性（Nature 393(1999) 440）。对该网络耦合体系结构的详细研究表明，总体动态源于两个交织子网络的相互作用。一个子网络在热带地区运行，另一个在高纬度地区运行，赤道地区的子网络作为媒介，在两个半球之间建立联系。这两个子系统都是“小世界”网络，但这两个子系统之间存在明显的差异。热带网络是一个几乎全连通的网络，而中纬度网络则更像一个无标度网络，其特征是超级节点占主导地位，具有多重分形特征。这种独特的结构可能不仅会带来关于气候系统动力学的新见解，还会带来其他具有大量自由度的空间扩展复杂系统的新见解。(C) 2003 Elsevier B.V.版权所有
We consider climate as a network of many dynamical systems and apply ideas from graph theory to a global data set to study its collective behavior. We find that the network has properties of 'small-world' networks (Nature 393 (1999) 440). A detailed investigation of the coupling architecture of this network reveals that the overall dynamics emerge from the interaction of two interweaved subnetworks. One subnetwork operates in the tropics and the other at higher latitudes with the equatorial one acting as an agent that establishes links between the two hemispheres. Both subsystems are 'small-world' networks, but there are distinct differences between the two subsystems. The tropical one is an almost fully connected network, whereas the mid-latitude one is more like a scale-free network characterized by dominant super nodes, and multifractal properties. This unique architecture may lead to new insights not only about the dynamics of the climate system but of other spatially extended complex systems with a large number of degrees of freedom. (C) 2003 Elsevier B.V. All rights reserved.