论文标题
对新生代气候进化的标点平衡分析表现出突然过渡的层次结构
A Punctuated Equilibrium Analysis of the Climate Evolution of Cenozoic exhibits a Hierarchy of Abrupt Transitions
论文作者
论文摘要
地球的气候在其历史上经历了许多关键过渡，这些过渡通常伴随着生物圈的巨大变化。涵盖不同时间尺度的各种代理记录中证明了此类过渡。然后，目标是从重要性方面识别，日期和对过去的关键转变进行排名，从而对气候历史产生更详尽的看法。为了说明这样一个角度，它启发了进化论的标点平衡角度，我们分析了2个关键的高分辨率数据集：Cenogrid Marine汇编（过去的66 Myr）和北大西洋U1308记录（过去3.3 MYR）。通过将单个时间序列的复发分析与基于准电位理论的多元表示形式相结合，我们确定了与主要的政权变化相关的关键突然过渡，从而区分了气候变化的各种群集。这允许将系统的时间进化解释为动态景观中发生的轨迹，该轨迹的多尺度特征与临界点的层次结构相关联。
The Earth's climate has experienced numerous critical transitions during its history, which have often been accompanied by massive and rapid changes in the biosphere. Such transitions are evidenced in various proxy records covering different timescales. The goal is then to identify, date, and rank past critical transitions in terms of importance, thus possibly yielding a more thorough perspective on climatic history. To illustrate such an angle, which inspired the punctuated equilibrium angle on the theory of evolution, we have analyzed 2 key high-resolution datasets: the CENOGRID marine compilation (past 66 Myr), and North Atlantic U1308 record (past 3.3 Myr). By combining recurrence analysis of the individual time series with a multivariate representation of the system based on the theory of the quasi-potential, we identify the key abrupt transitions associated with major regime changes that differentiate various clusters of climate variability. This allows interpreting the time-evolution of the system as a trajectory taking place in a dynamical landscape, whose multiscale features are associated with a hierarchy of tipping points.
