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DOI	10.1007/s00382-019-05087-3
	Crossover and peaks in the Pleistocene climate spectrum; understanding from simple ice age models
	Ditlevsen P.; Mitsui T.; Crucifix M.
发表日期	2020
ISSN	0930-7575
起始页码	1801
结束页码	1818
卷号	54
英文摘要	The power spectrum provides a compact representation of the scale dependence of the variability in time series. At multi-millennial time scales the spectrum of the Pleistocene climate is composed of a set of narrow band spectral modes attributed to the regularly varying changes in insolation from the astronomical change in Earth’s orbit and rotation superimposed on a continuous background generally attributed to stochastic variations. Quantitative analyses of paleoclimatic records indicate that the continuous part comprises a dominant part of the variance. It exhibits a power-law dependency typical of stochastic, self-similar processes, but with a scale break at the frequency of glacial-interglacial cycles. Here we discuss possible origins of this scale break, the connection between the continuous background and the narrow bands, and the apparently modest spectral power above the continuum at these scales. We demonstrate that the observed scale break around 100 ka can have a variety of different origins and does not imply an internal time scale of correlation as implied by the simplest linear stochastic model. © 2019, The Author(s).
语种	英语
scopus关键词	climate variation; glacial-interglacial cycle; modeling; paleoclimate; Pleistocene
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145607
作者单位	Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark; Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwa, Japan; UCLouvain, Earth and Life Institute, Louvain-la-Neuve, Belgium
推荐引用方式 GB/T 7714	Ditlevsen P.,Mitsui T.,Crucifix M.. Crossover and peaks in the Pleistocene climate spectrum; understanding from simple ice age models[J],2020,54.
APA	Ditlevsen P.,Mitsui T.,&Crucifix M..(2020).Crossover and peaks in the Pleistocene climate spectrum; understanding from simple ice age models.Climate Dynamics,54.
MLA	Ditlevsen P.,et al."Crossover and peaks in the Pleistocene climate spectrum; understanding from simple ice age models".Climate Dynamics 54(2020).