Topology of Earth's climate indices and phase-locked states
Topology of Earth's climate indices and phase-locked states
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DOI：
10.1016/j.physleta.2010.08.025
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发表时间：
2010-09-06
影响因子：
2.6
通讯作者：
Douglass, David H.
中科院分区：
文献类型：
--
作者：
Douglass, David H.
Swanson 和 Tsonis (2009) [1] (ST) 在对一组气候指数的研究中确定了地球气候系统的锁相状态。他们根据锁相参数 S 的特征报告了自 1900 年以来的五次气候变化事件。本研究发现气候指数集具有重要的拓扑特性，例如描述指数之间锁相幅度的公制直径 D。 D 随时间变化的最小值被证明与气候变化有关。确定了自 1870 年以来的 18 起重大事件，其中包括 ST 报告的 5 起。其中十个最小值对应于已报告的事件，例如有据可查的“20 世纪 70 年代中期的气候变化”和最近的 2001-2002 年气候变化。大多数气候变化都趋向于辐射平衡。 (C) 2010 Elsevier B.V. 保留所有权利。
Phase-locked states in Earth's climate system were identified in a study of a set of climate indices by Swanson and Tsonis (2009) [1] (ST). They reported five climate shift events since 1900 based upon features in a phase-locking parameter S. The present study finds that sets of climate indices have important topological properties such as a metric diameter D that describes the magnitude of phase locking among the indices. Minima in D as a function of time are shown to be associated with climate shifts. Eighteen strong events since 1870 are identified, including the five reported by ST. Ten of these minima correspond to reported events such as the well documented "climate shift of the mid-1970s" and the more recent climate shift of 2001-2002. Most climate shifts tend toward radiative equilibrium. (C) 2010 Elsevier B.V. All rights reserved.