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

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 p...

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Main Authors: Rousseau, Denis-Didier, Antoine, Pierre, Boers, Niklas, Lagroix, France, Ghil, Michael, Lomax, Johanna, Fuchs, Markus, Debret, Maxime, Hatté, Christine, Moine, Olivier, Gauthier, Caroline, Jordanova, Diana, Jordanova, Neli
Format: Article in Journal/Newspaper
Language:English
Published: Katlenburg-Lindau : Copernicus Ges. 2020
Subjects:
550
Online Access:https://oa.tib.eu/renate/handle/123456789/6855
https://doi.org/10.34657/5902
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spelling ftleibnizopen:oai:oai.leibnizopen.de:HDA874cBdbrxVwz6wrpP 2023-06-11T04:09:50+02:00 Dansgaard-Oeschger-like events of the penultimate climate cycle: The loess point of view Rousseau, Denis-Didier Antoine, Pierre Boers, Niklas Lagroix, France Ghil, Michael Lomax, Johanna Fuchs, Markus Debret, Maxime Hatté, Christine Moine, Olivier Gauthier, Caroline Jordanova, Diana Jordanova, Neli 2020 application/pdf https://oa.tib.eu/renate/handle/123456789/6855 https://doi.org/10.34657/5902 eng eng Katlenburg-Lindau : Copernicus Ges. CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ Climate of the past : CP 16 (2020), Nr. 2 climate cycle Dansgaard-Oeschger cycle dating method ice core Last Glacial marine isotope stage Northern Hemisphere paleosol soil horizon Arctic Europe Greenland 550 article Text 2020 ftleibnizopen https://doi.org/10.34657/5902 2023-05-07T23:12:46Z 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 <span classCombining double low line inline-formula 18O 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. © 2020 Author(s). publishedVersion Article in Journal/Newspaper Arctic Greenland Greenland ice core ice core LeibnizOpen (The Leibniz Association) Arctic Greenland
institution Open Polar
collection LeibnizOpen (The Leibniz Association)
op_collection_id ftleibnizopen
language English
topic climate cycle
Dansgaard-Oeschger cycle
dating method
ice core
Last Glacial
marine isotope stage
Northern Hemisphere
paleosol
soil horizon
Arctic
Europe
Greenland
550
spellingShingle climate cycle
Dansgaard-Oeschger cycle
dating method
ice core
Last Glacial
marine isotope stage
Northern Hemisphere
paleosol
soil horizon
Arctic
Europe
Greenland
550
Rousseau, Denis-Didier
Antoine, Pierre
Boers, Niklas
Lagroix, France
Ghil, Michael
Lomax, Johanna
Fuchs, Markus
Debret, Maxime
Hatté, Christine
Moine, Olivier
Gauthier, Caroline
Jordanova, Diana
Jordanova, Neli
Dansgaard-Oeschger-like events of the penultimate climate cycle: The loess point of view
topic_facet climate cycle
Dansgaard-Oeschger cycle
dating method
ice core
Last Glacial
marine isotope stage
Northern Hemisphere
paleosol
soil horizon
Arctic
Europe
Greenland
550
description 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 <span classCombining double low line inline-formula 18O 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. © 2020 Author(s). publishedVersion
format Article in Journal/Newspaper
author Rousseau, Denis-Didier
Antoine, Pierre
Boers, Niklas
Lagroix, France
Ghil, Michael
Lomax, Johanna
Fuchs, Markus
Debret, Maxime
Hatté, Christine
Moine, Olivier
Gauthier, Caroline
Jordanova, Diana
Jordanova, Neli
author_facet Rousseau, Denis-Didier
Antoine, Pierre
Boers, Niklas
Lagroix, France
Ghil, Michael
Lomax, Johanna
Fuchs, Markus
Debret, Maxime
Hatté, Christine
Moine, Olivier
Gauthier, Caroline
Jordanova, Diana
Jordanova, Neli
author_sort Rousseau, Denis-Didier
title Dansgaard-Oeschger-like events of the penultimate climate cycle: The loess point of view
title_short Dansgaard-Oeschger-like events of the penultimate climate cycle: The loess point of view
title_full Dansgaard-Oeschger-like events of the penultimate climate cycle: The loess point of view
title_fullStr Dansgaard-Oeschger-like events of the penultimate climate cycle: The loess point of view
title_full_unstemmed Dansgaard-Oeschger-like events of the penultimate climate cycle: The loess point of view
title_sort dansgaard-oeschger-like events of the penultimate climate cycle: the loess point of view
publisher Katlenburg-Lindau : Copernicus Ges.
publishDate 2020
url https://oa.tib.eu/renate/handle/123456789/6855
https://doi.org/10.34657/5902
geographic Arctic
Greenland
geographic_facet Arctic
Greenland
genre Arctic
Greenland
Greenland ice core
ice core
genre_facet Arctic
Greenland
Greenland ice core
ice core
op_source Climate of the past : CP 16 (2020), Nr. 2
op_rights CC BY 4.0 Unported
https://creativecommons.org/licenses/by/4.0/
op_doi https://doi.org/10.34657/5902
_version_ 1768383831538139136