气候变化领域集成服务门户(CCPortal): Technical note: Characterising and comparing different palaeoclimates with dynamical systems theory

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DOI	10.5194/cp-17-545-2021
	Technical note: Characterising and comparing different palaeoclimates with dynamical systems theory
	Messori G.; Faranda D.
发表日期	2021
ISSN	1814-9324
起始页码	475
结束页码	485
卷号	17 期号:1
英文摘要	Numerical climate simulations produce vast amounts of high-resolution data. This poses new challenges to the palaeoclimate community-and indeed to the broader climate community-in how to efficiently process and interpret model output. The palaeoclimate community also faces the additional challenge of having to characterise and compare a much broader range of climates than encountered in other subfields of climate science. Here we propose an analysis framework, grounded in dynamical systems theory, which may contribute to overcoming these challenges. The framework enables the characterisation of the dynamics of a given climate through a small number of metrics. These may be applied to individual climate variables or to several variables at once, and they can diagnose properties such as persistence, active number of degrees of freedom and coupling. Crucially, the metrics provide information on instantaneous states of the chosen variable(s). To illustrate the framework's applicability, we analyse three numerical simulations of midHolocene climates over North Africa under different boundary conditions. We find that the three simulations produce climate systems with different dynamical properties, such as persistence of the spatial precipitation patterns and coupling between precipitation and large-scale sea level pressure patterns, which are reflected in the dynamical systems metrics. We conclude that the dynamical systems framework holds significant potential for analysing palaeoclimate simulations. At the same time, an appraisal of the framework's limitations suggests that it should be viewed as a complement to more conventional analyses, rather than as a wholesale substitute. © 2021 Author(s).
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183598
作者单位	Department of Earth Sciences, Uppsala University, Uppsala, Sweden; Centre of Natural Hazards and Disaster Science (CNDS), Uppsala University, Uppsala, Sweden; Department of Meteorology, Stockholm University, Stockholm, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France; London Mathematical Laboratory, London, United Kingdom; LMD/IPSL, Ecole Normale Superieure, Psl Research University, Paris, France
推荐引用方式 GB/T 7714	Messori G.,Faranda D.. Technical note: Characterising and comparing different palaeoclimates with dynamical systems theory[J],2021,17(1).
APA	Messori G.,&Faranda D..(2021).Technical note: Characterising and comparing different palaeoclimates with dynamical systems theory.Climate of the Past,17(1).
MLA	Messori G.,et al."Technical note: Characterising and comparing different palaeoclimates with dynamical systems theory".Climate of the Past 17.1(2021).