One-to-one coupling of glacial climate variability in Greenland and Antarctica
Precise knowledge of the phase relationship between climate changes in the two hemispheres is a key for understanding the Earth's climate dynamics. For the last glacial period, ice core studies have revealed strong coupling of the largest millennial-scale warm events in Antarctica with the long...
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London, Springer Science and Business Media LLC
2022
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Online Access: | https://doi.org/10.1038/nature05301 http://infoscience.epfl.ch/record/298361 |
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ftinfoscience:oai:infoscience.epfl.ch:298361 2023-05-15T13:43:17+02:00 One-to-one coupling of glacial climate variability in Greenland and Antarctica Barbante, C. Barnola, J.-M. Becagli, S. Beer, J. Bigler, M. Boutron, C. Blunier, T. Castellano, E. Cattani, O. Chappellaz, J. Dahl-Jensen, D. Debret, M. Delmonte, B. Dick, D. Falourd, S. Faria, S. Federer, U. Fischer, H. Freitag, J. Frenzel, A. Fritzsche, D. Fundel, F. Gabrielli, P. Gaspari, V. Gersonde, R. Graf, W. Grigoriev, D. Hamann, I. Hansson, M. Hoffmann, G. Hutterli, M. A. Huybrechts, P. Isaksson, E. Johnsen, S. Jouzel, J. Kaczmarska, M. Karlin, T. Kaufmann, P. Kipfstuhl, S. Kohno, M. Lambert, F. Lambrecht, Anja Lambrecht, Astrid Landais, A. Lawer, G. Leuenberger, M. Littot, G. Loulergue, L. Luethi, D. Maggi, V. 2022-11-23T16:11:52Z https://doi.org/10.1038/nature05301 http://infoscience.epfl.ch/record/298361 unknown London, Springer Science and Business Media LLC doi:10.1038/nature05301 isi:000241867200038 http://infoscience.epfl.ch/record/298361 http://infoscience.epfl.ch/record/298361 Text 2022 ftinfoscience https://doi.org/10.1038/nature05301 2023-02-13T23:12:34Z Precise knowledge of the phase relationship between climate changes in the two hemispheres is a key for understanding the Earth's climate dynamics. For the last glacial period, ice core studies have revealed strong coupling of the largest millennial-scale warm events in Antarctica with the longest Dansgaard-Oeschger events in Greenland through the Atlantic meridional overturning circulation. It has been unclear, however, whether the shorter Dansgaard-Oeschger events have counterparts in the shorter and less prominent Antarctic temperature variations, and whether these events are linked by the same mechanism. Here we present a glacial climate record derived from an ice core from Dronning Maud Land, Antarctica, which represents South Atlantic climate at a resolution comparable with the Greenland ice core records. After methane synchronization with an ice core from North Greenland, the oxygen isotope record from the Dronning Maud Land ice core shows a one-to-one coupling between all Antarctic warm events and Greenland Dansgaard-Oeschger events by the bipolar seesaw. The amplitude of the Antarctic warm events is found to be linearly dependent on the duration of the concurrent stadial in the North, suggesting that they all result from a similar reduction in the meridional overturning circulation. ©2006 Nature Publishing Group. Text Antarc* Antarctic Antarctica Dansgaard-Oeschger events Dronning Maud Land Greenland Greenland ice core ice core North Greenland EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Dronning Maud Land Greenland The Antarctic Nature 444 7116 195 198 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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Precise knowledge of the phase relationship between climate changes in the two hemispheres is a key for understanding the Earth's climate dynamics. For the last glacial period, ice core studies have revealed strong coupling of the largest millennial-scale warm events in Antarctica with the longest Dansgaard-Oeschger events in Greenland through the Atlantic meridional overturning circulation. It has been unclear, however, whether the shorter Dansgaard-Oeschger events have counterparts in the shorter and less prominent Antarctic temperature variations, and whether these events are linked by the same mechanism. Here we present a glacial climate record derived from an ice core from Dronning Maud Land, Antarctica, which represents South Atlantic climate at a resolution comparable with the Greenland ice core records. After methane synchronization with an ice core from North Greenland, the oxygen isotope record from the Dronning Maud Land ice core shows a one-to-one coupling between all Antarctic warm events and Greenland Dansgaard-Oeschger events by the bipolar seesaw. The amplitude of the Antarctic warm events is found to be linearly dependent on the duration of the concurrent stadial in the North, suggesting that they all result from a similar reduction in the meridional overturning circulation. ©2006 Nature Publishing Group. |
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author |
Barbante, C. Barnola, J.-M. Becagli, S. Beer, J. Bigler, M. Boutron, C. Blunier, T. Castellano, E. Cattani, O. Chappellaz, J. Dahl-Jensen, D. Debret, M. Delmonte, B. Dick, D. Falourd, S. Faria, S. Federer, U. Fischer, H. Freitag, J. Frenzel, A. Fritzsche, D. Fundel, F. Gabrielli, P. Gaspari, V. Gersonde, R. Graf, W. Grigoriev, D. Hamann, I. Hansson, M. Hoffmann, G. Hutterli, M. A. Huybrechts, P. Isaksson, E. Johnsen, S. Jouzel, J. Kaczmarska, M. Karlin, T. Kaufmann, P. Kipfstuhl, S. Kohno, M. Lambert, F. Lambrecht, Anja Lambrecht, Astrid Landais, A. Lawer, G. Leuenberger, M. Littot, G. Loulergue, L. Luethi, D. Maggi, V. |
spellingShingle |
Barbante, C. Barnola, J.-M. Becagli, S. Beer, J. Bigler, M. Boutron, C. Blunier, T. Castellano, E. Cattani, O. Chappellaz, J. Dahl-Jensen, D. Debret, M. Delmonte, B. Dick, D. Falourd, S. Faria, S. Federer, U. Fischer, H. Freitag, J. Frenzel, A. Fritzsche, D. Fundel, F. Gabrielli, P. Gaspari, V. Gersonde, R. Graf, W. Grigoriev, D. Hamann, I. Hansson, M. Hoffmann, G. Hutterli, M. A. Huybrechts, P. Isaksson, E. Johnsen, S. Jouzel, J. Kaczmarska, M. Karlin, T. Kaufmann, P. Kipfstuhl, S. Kohno, M. Lambert, F. Lambrecht, Anja Lambrecht, Astrid Landais, A. Lawer, G. Leuenberger, M. Littot, G. Loulergue, L. Luethi, D. Maggi, V. One-to-one coupling of glacial climate variability in Greenland and Antarctica |
author_facet |
Barbante, C. Barnola, J.-M. Becagli, S. Beer, J. Bigler, M. Boutron, C. Blunier, T. Castellano, E. Cattani, O. Chappellaz, J. Dahl-Jensen, D. Debret, M. Delmonte, B. Dick, D. Falourd, S. Faria, S. Federer, U. Fischer, H. Freitag, J. Frenzel, A. Fritzsche, D. Fundel, F. Gabrielli, P. Gaspari, V. Gersonde, R. Graf, W. Grigoriev, D. Hamann, I. Hansson, M. Hoffmann, G. Hutterli, M. A. Huybrechts, P. Isaksson, E. Johnsen, S. Jouzel, J. Kaczmarska, M. Karlin, T. Kaufmann, P. Kipfstuhl, S. Kohno, M. Lambert, F. Lambrecht, Anja Lambrecht, Astrid Landais, A. Lawer, G. Leuenberger, M. Littot, G. Loulergue, L. Luethi, D. Maggi, V. |
author_sort |
Barbante, C. |
title |
One-to-one coupling of glacial climate variability in Greenland and Antarctica |
title_short |
One-to-one coupling of glacial climate variability in Greenland and Antarctica |
title_full |
One-to-one coupling of glacial climate variability in Greenland and Antarctica |
title_fullStr |
One-to-one coupling of glacial climate variability in Greenland and Antarctica |
title_full_unstemmed |
One-to-one coupling of glacial climate variability in Greenland and Antarctica |
title_sort |
one-to-one coupling of glacial climate variability in greenland and antarctica |
publisher |
London, Springer Science and Business Media LLC |
publishDate |
2022 |
url |
https://doi.org/10.1038/nature05301 http://infoscience.epfl.ch/record/298361 |
geographic |
Antarctic Dronning Maud Land Greenland The Antarctic |
geographic_facet |
Antarctic Dronning Maud Land Greenland The Antarctic |
genre |
Antarc* Antarctic Antarctica Dansgaard-Oeschger events Dronning Maud Land Greenland Greenland ice core ice core North Greenland |
genre_facet |
Antarc* Antarctic Antarctica Dansgaard-Oeschger events Dronning Maud Land Greenland Greenland ice core ice core North Greenland |
op_source |
http://infoscience.epfl.ch/record/298361 |
op_relation |
doi:10.1038/nature05301 isi:000241867200038 http://infoscience.epfl.ch/record/298361 |
op_doi |
https://doi.org/10.1038/nature05301 |
container_title |
Nature |
container_volume |
444 |
container_issue |
7116 |
container_start_page |
195 |
op_container_end_page |
198 |
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1766186862720843776 |