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  Dansgaard–Oeschger-like events of the penultimate climate cycle: the loess point of view

Rousseau, D.-D., Antoine, P., Boers, N., Lagroix, F., Ghil, M., Lomax, J., Fuchs, M., Debret, M., Hatté, C., Moine, O., Gauthier, C., Jordanova, D., Jordanova, N. (2020): Dansgaard–Oeschger-like events of the penultimate climate cycle: the loess point of view. - Climate of the Past, 16, 2, 713-727.
https://doi.org/10.5194/cp-16-713-2020

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 Urheber:
Rousseau, Denis-Didier1, Autor
Antoine, Pierre1, Autor
Boers, Niklas2, Autor              
Lagroix, France1, Autor
Ghil, Michael1, Autor
Lomax, Johanna1, Autor
Fuchs, Markus1, Autor
Debret, Maxime1, Autor
Hatté, Christine1, Autor
Moine, Olivier1, Autor
Gauthier, Caroline1, Autor
Jordanova, Diana1, Autor
Jordanova, Neli1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Zusammenfassung: The global character of the millennial-scale climate variability associated with the Dansgaard–Oeschger (DO) events in Greenland has been well-established for the last glacial cycle. Mainly due to the sparsity of reliable data, however, the spatial coherence of corresponding variability during the penultimate cycle is less clear. New investigations of European loess records from Marine Isotope Stage (MIS) 6 reveal the occurrence of alternating loess intervals and paleosols (incipient soil horizons), similar to those from the last climatic cycle. These paleosols are correlated, based on their stratigraphical position and numbers as well as available optically stimulated luminescence (OSL) dates, with interstadials described in various Northern Hemisphere records and in GLt_syn, the synthetic 800 kyr record of Greenland ice core δ18O. Therefore, referring to the interstadials described in the record of the last climate cycle in European loess sequences, the four MIS 6 interstadials can confidently be interpreted as DO-like events of the penultimate climate cycle. Six more interstadials are identified from proxy measurements performed on the same interval, leading to a total of 10 interstadials with a DO-like event status. The statistical similarity between the millennial-scale loess–paleosol oscillations during the last and penultimate climate cycle provides direct empirical evidence that the cycles of the penultimate cycle are indeed of the same nature as the DO cycles originally discovered for the last glacial cycle. Our results thus imply that their underlying cause and global imprint were characteristic of at least the last two climate cycles.

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 Datum: 2020-04-092020-04-09
 Publikationsstatus: Final veröffentlicht
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 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.5194/cp-16-713-2020
MDB-ID: No data to archive
PIKDOMAIN: RD4 - Complexity Science
Organisational keyword: RD4 - Complexity Science
Working Group: Development of advanced time series analysis techniques
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Titel: Climate of the Past
Genre der Quelle: Zeitschrift, SCI, Scopus, p3, oa
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Seiten: - Band / Heft: 16 (2) Artikelnummer: - Start- / Endseite: 713 - 727 Identifikator: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals78
Publisher: Copernicus