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/11368/2626897 https://doi.org/10.1073/pnas.0914536107 |
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ftunitriestiris:oai:arts.units.it:11368/2626897 2023-05-15T14:07:49+02:00 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/11368/2626897 https://doi.org/10.1073/pnas.0914536107 eng eng volume:107 issue:27 firstpage:12091 lastpage:12094 numberofpages:4 journal:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://hdl.handle.net/11368/2626897 doi:10.1073/pnas.0914536107 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77955459994 deuterium exce water stable isotope deglaciation bipolar seesaw site temperature source temperature polar ice cores info:eu-repo/semantics/article 2010 ftunitriestiris https://doi.org/10.1073/pnas.0914536107 2023-04-09T06:11:16Z 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 degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) Antarctic Indian Proceedings of the National Academy of Sciences 107 27 12091 12094 |
institution |
Open Polar |
collection |
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
deuterium exce water stable isotope deglaciation bipolar seesaw site temperature source temperature polar ice cores |
spellingShingle |
deuterium exce water stable isotope deglaciation bipolar seesaw site temperature source temperature polar ice cores 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 |
topic_facet |
deuterium exce water stable isotope deglaciation bipolar seesaw site temperature source temperature polar ice cores |
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 |
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/11368/2626897 https://doi.org/10.1073/pnas.0914536107 |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Antarctica ice core North Atlantic |
genre_facet |
Antarc* Antarctic Antarctica ice core North Atlantic |
op_relation |
volume:107 issue:27 firstpage:12091 lastpage:12094 numberofpages:4 journal:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://hdl.handle.net/11368/2626897 doi:10.1073/pnas.0914536107 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-77955459994 |
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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1766279848259485696 |