Eurasian contribution to the last glacial dust cycle: how are loess sequences built?
International audience The last 130 000 years have been marked by pronounced millennial-scale climate variability, which strongly impacted the terrestrial environments of the Northern Hemisphere, especially at middle latitudes. Identifying the trigger of these variations, which are most likely assoc...
Published in: | Climate of the Past |
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ftunivnantes:oai:HAL:insu-03321826v1 2023-05-15T16:27:52+02:00 Eurasian contribution to the last glacial dust cycle: how are loess sequences built? Rousseau, Denis-Didier Svensson, Anders Bigler, Matthias Sima, Adriana Steffensen, Jorgen, Boers, Niklas Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Physics Institute Bern University of Bern 2017 https://hal-insu.archives-ouvertes.fr/insu-03321826 https://hal-insu.archives-ouvertes.fr/insu-03321826/document https://hal-insu.archives-ouvertes.fr/insu-03321826/file/DDR_ClimPast_17.pdf https://doi.org/10.5194/cp-13-1181-2017 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-1181-2017 insu-03321826 https://hal-insu.archives-ouvertes.fr/insu-03321826 https://hal-insu.archives-ouvertes.fr/insu-03321826/document https://hal-insu.archives-ouvertes.fr/insu-03321826/file/DDR_ClimPast_17.pdf doi:10.5194/cp-13-1181-2017 info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal-insu.archives-ouvertes.fr/insu-03321826 Climate of the Past, European Geosciences Union (EGU), 2017, 13 (9), pp.1181 - 1197. ⟨10.5194/cp-13-1181-2017⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2017 ftunivnantes https://doi.org/10.5194/cp-13-1181-2017 2022-08-10T01:30:09Z International audience The last 130 000 years have been marked by pronounced millennial-scale climate variability, which strongly impacted the terrestrial environments of the Northern Hemisphere, especially at middle latitudes. Identifying the trigger of these variations, which are most likely associated with strong couplings between the ocean and the atmosphere, still remains a key question. Here, we show that the analysis of δ 18 O and dust in the Greenland ice cores, and a critical study of their source variations, reconciles these records with those observed on the Eurasian continent. We demonstrate the link between European and Chinese loess sequences, dust records in Greenland, and variations in the North Atlantic sea ice extent. The sources of the emitted and transported dust material are variable and relate to different environments corresponding to present desert areas, but also hidden regions related to lower sea level stands, dry rivers, or zones close to the frontal moraines of the main Northern Hemisphere ice sheets. We anticipate our study to be at the origin of more sophisticated and elaborated investigations of millennial and sub-millennial continental climate variability in the Northern Hemisphere. Article in Journal/Newspaper Greenland Greenland ice cores North Atlantic Sea ice Université de Nantes: HAL-UNIV-NANTES Greenland Climate of the Past 13 9 1181 1197 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Rousseau, Denis-Didier Svensson, Anders Bigler, Matthias Sima, Adriana Steffensen, Jorgen, Boers, Niklas Eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience The last 130 000 years have been marked by pronounced millennial-scale climate variability, which strongly impacted the terrestrial environments of the Northern Hemisphere, especially at middle latitudes. Identifying the trigger of these variations, which are most likely associated with strong couplings between the ocean and the atmosphere, still remains a key question. Here, we show that the analysis of δ 18 O and dust in the Greenland ice cores, and a critical study of their source variations, reconciles these records with those observed on the Eurasian continent. We demonstrate the link between European and Chinese loess sequences, dust records in Greenland, and variations in the North Atlantic sea ice extent. The sources of the emitted and transported dust material are variable and relate to different environments corresponding to present desert areas, but also hidden regions related to lower sea level stands, dry rivers, or zones close to the frontal moraines of the main Northern Hemisphere ice sheets. We anticipate our study to be at the origin of more sophisticated and elaborated investigations of millennial and sub-millennial continental climate variability in the Northern Hemisphere. |
author2 |
Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Centre for Ice and Climate Copenhagen Niels Bohr Institute Copenhagen (NBI) Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science Copenhagen University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH) Physics Institute Bern University of Bern |
format |
Article in Journal/Newspaper |
author |
Rousseau, Denis-Didier Svensson, Anders Bigler, Matthias Sima, Adriana Steffensen, Jorgen, Boers, Niklas |
author_facet |
Rousseau, Denis-Didier Svensson, Anders Bigler, Matthias Sima, Adriana Steffensen, Jorgen, Boers, Niklas |
author_sort |
Rousseau, Denis-Didier |
title |
Eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
title_short |
Eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
title_full |
Eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
title_fullStr |
Eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
title_full_unstemmed |
Eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
title_sort |
eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03321826 https://hal-insu.archives-ouvertes.fr/insu-03321826/document https://hal-insu.archives-ouvertes.fr/insu-03321826/file/DDR_ClimPast_17.pdf https://doi.org/10.5194/cp-13-1181-2017 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores North Atlantic Sea ice |
genre_facet |
Greenland Greenland ice cores North Atlantic Sea ice |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal-insu.archives-ouvertes.fr/insu-03321826 Climate of the Past, European Geosciences Union (EGU), 2017, 13 (9), pp.1181 - 1197. ⟨10.5194/cp-13-1181-2017⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-1181-2017 insu-03321826 https://hal-insu.archives-ouvertes.fr/insu-03321826 https://hal-insu.archives-ouvertes.fr/insu-03321826/document https://hal-insu.archives-ouvertes.fr/insu-03321826/file/DDR_ClimPast_17.pdf doi:10.5194/cp-13-1181-2017 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-13-1181-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
9 |
container_start_page |
1181 |
op_container_end_page |
1197 |
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1766017427737411584 |