Eurasian contribution to the last glacial dust cycle: how are loess sequences built?
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 coupl...
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Copernicus Publications
2017
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fttriple:oai:gotriple.eu:oai:doaj.org/article:bb7b428dfaca47ba886fd102ee9ca10d 2023-05-15T16:27:40+02:00 Eurasian contribution to the last glacial dust cycle: how are loess sequences built? D.-D. Rousseau A. Svensson M. Bigler A. Sima J. P. Steffensen N. Boers 2017-09-01 https://doi.org/10.5194/cp-13-1181-2017 https://www.clim-past.net/13/1181/2017/cp-13-1181-2017.pdf https://doaj.org/article/bb7b428dfaca47ba886fd102ee9ca10d en eng Copernicus Publications doi:10.5194/cp-13-1181-2017 1814-9324 1814-9332 https://www.clim-past.net/13/1181/2017/cp-13-1181-2017.pdf https://doaj.org/article/bb7b428dfaca47ba886fd102ee9ca10d undefined Climate of the Past, Vol 13, Pp 1181-1197 (2017) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2017 fttriple https://doi.org/10.5194/cp-13-1181-2017 2023-01-22T19:23:40Z 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 δ18O 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 Unknown Greenland Climate of the Past 13 9 1181 1197 |
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envir geo D.-D. Rousseau A. Svensson M. Bigler A. Sima J. P. Steffensen N. Boers Eurasian contribution to the last glacial dust cycle: how are loess sequences built? |
topic_facet |
envir geo |
description |
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 δ18O 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. |
format |
Article in Journal/Newspaper |
author |
D.-D. Rousseau A. Svensson M. Bigler A. Sima J. P. Steffensen N. Boers |
author_facet |
D.-D. Rousseau A. Svensson M. Bigler A. Sima J. P. Steffensen N. Boers |
author_sort |
D.-D. Rousseau |
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 |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/cp-13-1181-2017 https://www.clim-past.net/13/1181/2017/cp-13-1181-2017.pdf https://doaj.org/article/bb7b428dfaca47ba886fd102ee9ca10d |
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 |
Climate of the Past, Vol 13, Pp 1181-1197 (2017) |
op_relation |
doi:10.5194/cp-13-1181-2017 1814-9324 1814-9332 https://www.clim-past.net/13/1181/2017/cp-13-1181-2017.pdf https://doaj.org/article/bb7b428dfaca47ba886fd102ee9ca10d |
op_rights |
undefined |
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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1766017113662685184 |