Abrupt change of Antarctic moisture origin at the end of termination II
The deuterium excess of polar ice cores documents past changes in evaporation conditions and moisture origin. New data obtained from the European Project for Ice Coring in Antarctica Dome C East Antarctic ice core provide new insights on the sequence of events involved in Termination II, the transit...
Published in: | Proceedings of the National Academy of Sciences |
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Online Access: | http://hdl.handle.net/10278/42698 https://doi.org/10.1073/pnas.0914536107 |
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ftuniveneziairis:oai:iris.unive.it:10278/42698 2024-04-21T07:50:12+00:00 Abrupt change of Antarctic moisture origin at the end of termination II Masson Delmotte V. Blunier T. Cattani O. Chappellaz J. Cheng H. Dreyfus G. Edwards R. L. Falourd S. Govin A. Kawamura K. Johnsen S. J. Jouzel J. Landais A. Lemieux Dudon B. Lourantou A. Marshall G. J. Minster B. Mudelsee M. Pol K. Röthlisberger R. Selmo E. Waelbroeck C. STENNI, Barbara Masson Delmotte, V. Stenni, Barbara Blunier, T. Cattani, O. Chappellaz, J. Cheng, H. Dreyfus, G. Edwards, R. L. Falourd, S. Govin, A. Kawamura, K. Johnsen, S. J. Jouzel, J. Landais, A. Lemieux Dudon, B. Lourantou, A. Marshall, G. J. Minster, B. Mudelsee, M. Pol, K. Röthlisberger, R. Selmo, E. Waelbroeck, C. 2010 http://hdl.handle.net/10278/42698 https://doi.org/10.1073/pnas.0914536107 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000279572100011 volume:107 firstpage:12091 lastpage:12094 numberofpages:4 journal:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://hdl.handle.net/10278/42698 doi:10.1073/pnas.0914536107 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77955459994 info:eu-repo/semantics/closedAccess info:eu-repo/semantics/article 2010 ftuniveneziairis https://doi.org/10.1073/pnas.0914536107 2024-03-28T01:23:12Z The deuterium excess of polar ice cores documents past changes in evaporation conditions and moisture origin. New data obtained from the European Project for Ice Coring in Antarctica Dome C East Antarctic ice core provide new insights on the sequence of events involved in Termination II, the transition between the penultimate glacial and interglacial periods. This termination is marked by a north–south seesaw behavior, with first a slow methane concentration rise associated with a strong Antarctic temperature warming and a slow deuterium excess rise. This first step is followed by an abrupt north Atlantic warming, an abrupt resumption of the East Asian summer monsoon, a sharp methane rise, and a CO2 overshoot, which coincide within dating uncertainties with the end of Antarctic optimum. Here, we show that this second phase is marked by a very sharp Dome C centennial deuterium excess rise, revealing abrupt reorganization of atmospheric circulation in the southern Indian Ocean sector. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core North Atlantic Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Proceedings of the National Academy of Sciences 107 27 12091 12094 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
description |
The deuterium excess of polar ice cores documents past changes in evaporation conditions and moisture origin. New data obtained from the European Project for Ice Coring in Antarctica Dome C East Antarctic ice core provide new insights on the sequence of events involved in Termination II, the transition between the penultimate glacial and interglacial periods. This termination is marked by a north–south seesaw behavior, with first a slow methane concentration rise associated with a strong Antarctic temperature warming and a slow deuterium excess rise. This first step is followed by an abrupt north Atlantic warming, an abrupt resumption of the East Asian summer monsoon, a sharp methane rise, and a CO2 overshoot, which coincide within dating uncertainties with the end of Antarctic optimum. Here, we show that this second phase is marked by a very sharp Dome C centennial deuterium excess rise, revealing abrupt reorganization of atmospheric circulation in the southern Indian Ocean sector. |
author2 |
Masson Delmotte, V. Stenni, Barbara Blunier, T. Cattani, O. Chappellaz, J. Cheng, H. Dreyfus, G. Edwards, R. L. Falourd, S. Govin, A. Kawamura, K. Johnsen, S. J. Jouzel, J. Landais, A. Lemieux Dudon, B. Lourantou, A. Marshall, G. J. Minster, B. Mudelsee, M. Pol, K. Röthlisberger, R. Selmo, E. Waelbroeck, C. |
format |
Article in Journal/Newspaper |
author |
Masson Delmotte V. Blunier T. Cattani O. Chappellaz J. Cheng H. Dreyfus G. Edwards R. L. Falourd S. Govin A. Kawamura K. Johnsen S. J. Jouzel J. Landais A. Lemieux Dudon B. Lourantou A. Marshall G. J. Minster B. Mudelsee M. Pol K. Röthlisberger R. Selmo E. Waelbroeck C. STENNI, Barbara |
spellingShingle |
Masson Delmotte V. Blunier T. Cattani O. Chappellaz J. Cheng H. Dreyfus G. Edwards R. L. Falourd S. Govin A. Kawamura K. Johnsen S. J. Jouzel J. Landais A. Lemieux Dudon B. Lourantou A. Marshall G. J. Minster B. Mudelsee M. Pol K. Röthlisberger R. Selmo E. Waelbroeck C. STENNI, Barbara Abrupt change of Antarctic moisture origin at the end of termination II |
author_facet |
Masson Delmotte V. Blunier T. Cattani O. Chappellaz J. Cheng H. Dreyfus G. Edwards R. L. Falourd S. Govin A. Kawamura K. Johnsen S. J. Jouzel J. Landais A. Lemieux Dudon B. Lourantou A. Marshall G. J. Minster B. Mudelsee M. Pol K. Röthlisberger R. Selmo E. Waelbroeck C. STENNI, Barbara |
author_sort |
Masson Delmotte V. |
title |
Abrupt change of Antarctic moisture origin at the end of termination II |
title_short |
Abrupt change of Antarctic moisture origin at the end of termination II |
title_full |
Abrupt change of Antarctic moisture origin at the end of termination II |
title_fullStr |
Abrupt change of Antarctic moisture origin at the end of termination II |
title_full_unstemmed |
Abrupt change of Antarctic moisture origin at the end of termination II |
title_sort |
abrupt change of antarctic moisture origin at the end of termination ii |
publishDate |
2010 |
url |
http://hdl.handle.net/10278/42698 https://doi.org/10.1073/pnas.0914536107 |
genre |
Antarc* Antarctic Antarctica ice core North Atlantic |
genre_facet |
Antarc* Antarctic Antarctica ice core North Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000279572100011 volume:107 firstpage:12091 lastpage:12094 numberofpages:4 journal:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://hdl.handle.net/10278/42698 doi:10.1073/pnas.0914536107 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77955459994 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1073/pnas.0914536107 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
107 |
container_issue |
27 |
container_start_page |
12091 |
op_container_end_page |
12094 |
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1796934023321223168 |