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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Katlenburg-Lindau : Copernicus Ges.
2020
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Online Access: | https://oa.tib.eu/renate/handle/123456789/6855 https://doi.org/10.34657/5902 |
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ftleibnizopen:oai:oai.leibnizopen.de:fJNS04kBdbrxVwz6PRAH 2023-10-01T03:54:16+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 2023-09-03T23:18:04Z 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_ |
1778521721171607552 |