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  Orbital insolation variations, intrinsic climate variability, and Quaternary glaciations

Riechers, K., Mitsui, T., Boers, N., Ghil, M. (2022): Orbital insolation variations, intrinsic climate variability, and Quaternary glaciations. - Climate of the Past, 18, 4, 863-893.
https://doi.org/10.5194/cp-18-863-2022

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 Creators:
Riechers, Keno1, Author              
Mitsui, Takahito1, Author              
Boers, Niklas1, Author              
Ghil, Michael2, Author
Affiliations:
1Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent13              
2External Organizations, ou_persistent22              

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 Abstract: The relative role of external forcing and of intrinsic variability is a key question of climate variability in general and of our planet's paleoclimatic past in particular. Over the last 100 years since Milankovic's contributions, the importance of orbital forcing has been established for the period covering the last 2.6 Myr and the Quaternary glaciation cycles that took place during that time. A convincing case has also been made for the role of several internal mechanisms that are active on timescales both shorter and longer than the orbital ones. Such mechanisms clearly have a causal role in Dansgaard–Oeschger and Heinrich events, as well as in the mid-Pleistocene transition. We introduce herein a unified framework for the understanding of the orbital forcing's effects on the climate system's internal variability on timescales from thousands to millions of years. This framework relies on the fairly recent theory of non-autonomous and random dynamical systems, and it has so far been successfully applied in the climate sciences for problems like the El Niño–Southern Oscillation, the oceans' wind-driven circulation, and other problems on interannual to interdecadal timescales. Finally, we provide further examples of climate applications and present preliminary results of interest for the Quaternary glaciation cycles in general and the mid-Pleistocene transition in particular.

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Language(s): eng - English
 Dates: 2022-04-012022-04-212022-04-21
 Publication Status: Finally published
 Pages: 31
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.5194/cp-18-863-2022
PIKDOMAIN: RD4 - Complexity Science
Organisational keyword: RD4 - Complexity Science
Research topic keyword: Ice
Research topic keyword: Nonlinear Dynamics
Research topic keyword: Tipping Elements
Regional keyword: Global
Regional keyword: Arctic & Antarctica
Model / method: Nonlinear Data Analysis
MDB-ID: No data to archive
OATYPE: Gold Open Access
 Degree: -

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Title: Climate of the Past
Source Genre: Journal, SCI, Scopus, p3, oa
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Pages: - Volume / Issue: 18 (4) Sequence Number: - Start / End Page: 863 - 893 Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals78
Publisher: Copernicus