Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation
Ice-core records of climate from Greenland and Antarctica show asynchronous temperature variations on millennial timescales during the last glacial period. The warming during the transition from glacial to interglacial conditions was markedly different between the hemispheres, a pattern attributed t...
Published in: | Nature Geoscience |
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2011
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Online Access: | http://hdl.handle.net/11368/2626903 https://doi.org/10.1038/NGEO1026 |
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ftunitriestiris:oai:arts.units.it:11368/2626903 2023-05-15T13:32:20+02:00 Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation STENNI, BARBARA BONAZZA, MATTIA GENONI, LAURA Buiron D. Frezzotti M. Albani S. Barbante C. Bard E. Barnola J. M. Baroni C. Baumgartner S. Capron E. Castellano E. Chappellaz J. Delmonte B. Falourd, S. Iacumin P. Jouzel J. Kipfsthul J. Landais A. Lemieux Dudon B. Maggi V. Masson Delmotte V. Mazzola C. Minster B. Montagnat M. Mulvaney R. Narcisi B. Oerter H. Parrenin F. Petit J. R. Ritz C. Scarchilli C. Schilt A. Schüpbach S. Schwander J. Selmo E. Severi M. Stocker T. Udisti R. Stenni, Barbara Buiron, D. Frezzotti, M. Albani, S. Barbante, C. Bard, E. Barnola, J. M. Baroni, C. Baumgartner, S. Bonazza, Mattia Capron, E. Castellano, E. Chappellaz, J. Delmonte, B. Falourd, S. Genoni, Laura Iacumin, P. Jouzel, J. Kipfsthul, J. Landais, A. Lemieux Dudon, B. Maggi, V. Masson Delmotte, V. Mazzola, C. Minster, B. Montagnat, M. Mulvaney, R. Narcisi, B. Oerter, H. Parrenin, F. Petit, J. R. Ritz, C. Scarchilli, C. Schilt, A. Schüpbach, S. Schwander, J. Selmo, E. Severi, M. Stocker, T. Udisti, R. 2011 http://hdl.handle.net/11368/2626903 https://doi.org/10.1038/NGEO1026 eng eng volume:4 firstpage:46 lastpage:49 numberofpages:4 journal:NATURE GEOSCIENCE http://hdl.handle.net/11368/2626903 doi:10.1038/NGEO1026 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-78650555903 polar ice core methane synchronization bipolar seesaw last deglaciation East Antarctica Ross Sea info:eu-repo/semantics/article 2011 ftunitriestiris https://doi.org/10.1038/NGEO1026 2023-04-09T06:11:16Z Ice-core records of climate from Greenland and Antarctica show asynchronous temperature variations on millennial timescales during the last glacial period. The warming during the transition from glacial to interglacial conditions was markedly different between the hemispheres, a pattern attributed to the thermal bipolar see-saw. However, a record from the Ross Sea sector of East Antarctica has been suggested to be synchronous with Northern Hemisphere climate change. Here we present a temperature record from the Talos Dome ice core, also located in the Ross Sea sector. We compare our record with ice-core analyses from Greenland, based on methane synchronization, and find clearly asynchronous temperature changes during the deglaciation. We also find distinct differences in Antarctic records, pointing to differences in the climate evolution of the Indo-Pacific and Atlantic sectors of Antarctica. In the Atlantic sector, we find that the rate of warming slowed between 16,000 and 14,500 years ago, parallel with the deceleration of the rise in atmospheric carbon dioxide concentrations and with a slight cooling over Greenland. In addition, our chronology supports the hypothesis that the cooling of the Antarctic Cold Reversal is synchronous with the Bølling–Allerød warming in the northern hemisphere 14,700 years ago. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Greenland ice core Ross Sea Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) Antarctic The Antarctic East Antarctica Ross Sea Greenland Pacific Talos Dome ENVELOPE(158.000,158.000,-73.000,-73.000) Nature Geoscience 4 1 46 49 |
institution |
Open Polar |
collection |
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
polar ice core methane synchronization bipolar seesaw last deglaciation East Antarctica Ross Sea |
spellingShingle |
polar ice core methane synchronization bipolar seesaw last deglaciation East Antarctica Ross Sea STENNI, BARBARA BONAZZA, MATTIA GENONI, LAURA Buiron D. Frezzotti M. Albani S. Barbante C. Bard E. Barnola J. M. Baroni C. Baumgartner S. Capron E. Castellano E. Chappellaz J. Delmonte B. Falourd, S. Iacumin P. Jouzel J. Kipfsthul J. Landais A. Lemieux Dudon B. Maggi V. Masson Delmotte V. Mazzola C. Minster B. Montagnat M. Mulvaney R. Narcisi B. Oerter H. Parrenin F. Petit J. R. Ritz C. Scarchilli C. Schilt A. Schüpbach S. Schwander J. Selmo E. Severi M. Stocker T. Udisti R. Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation |
topic_facet |
polar ice core methane synchronization bipolar seesaw last deglaciation East Antarctica Ross Sea |
description |
Ice-core records of climate from Greenland and Antarctica show asynchronous temperature variations on millennial timescales during the last glacial period. The warming during the transition from glacial to interglacial conditions was markedly different between the hemispheres, a pattern attributed to the thermal bipolar see-saw. However, a record from the Ross Sea sector of East Antarctica has been suggested to be synchronous with Northern Hemisphere climate change. Here we present a temperature record from the Talos Dome ice core, also located in the Ross Sea sector. We compare our record with ice-core analyses from Greenland, based on methane synchronization, and find clearly asynchronous temperature changes during the deglaciation. We also find distinct differences in Antarctic records, pointing to differences in the climate evolution of the Indo-Pacific and Atlantic sectors of Antarctica. In the Atlantic sector, we find that the rate of warming slowed between 16,000 and 14,500 years ago, parallel with the deceleration of the rise in atmospheric carbon dioxide concentrations and with a slight cooling over Greenland. In addition, our chronology supports the hypothesis that the cooling of the Antarctic Cold Reversal is synchronous with the Bølling–Allerød warming in the northern hemisphere 14,700 years ago. |
author2 |
Stenni, Barbara Buiron, D. Frezzotti, M. Albani, S. Barbante, C. Bard, E. Barnola, J. M. Baroni, C. Baumgartner, S. Bonazza, Mattia Capron, E. Castellano, E. Chappellaz, J. Delmonte, B. Falourd, S. Genoni, Laura Iacumin, P. Jouzel, J. Kipfsthul, J. Landais, A. Lemieux Dudon, B. Maggi, V. Masson Delmotte, V. Mazzola, C. Minster, B. Montagnat, M. Mulvaney, R. Narcisi, B. Oerter, H. Parrenin, F. Petit, J. R. Ritz, C. Scarchilli, C. Schilt, A. Schüpbach, S. Schwander, J. Selmo, E. Severi, M. Stocker, T. Udisti, R. |
format |
Article in Journal/Newspaper |
author |
STENNI, BARBARA BONAZZA, MATTIA GENONI, LAURA Buiron D. Frezzotti M. Albani S. Barbante C. Bard E. Barnola J. M. Baroni C. Baumgartner S. Capron E. Castellano E. Chappellaz J. Delmonte B. Falourd, S. Iacumin P. Jouzel J. Kipfsthul J. Landais A. Lemieux Dudon B. Maggi V. Masson Delmotte V. Mazzola C. Minster B. Montagnat M. Mulvaney R. Narcisi B. Oerter H. Parrenin F. Petit J. R. Ritz C. Scarchilli C. Schilt A. Schüpbach S. Schwander J. Selmo E. Severi M. Stocker T. Udisti R. |
author_facet |
STENNI, BARBARA BONAZZA, MATTIA GENONI, LAURA Buiron D. Frezzotti M. Albani S. Barbante C. Bard E. Barnola J. M. Baroni C. Baumgartner S. Capron E. Castellano E. Chappellaz J. Delmonte B. Falourd, S. Iacumin P. Jouzel J. Kipfsthul J. Landais A. Lemieux Dudon B. Maggi V. Masson Delmotte V. Mazzola C. Minster B. Montagnat M. Mulvaney R. Narcisi B. Oerter H. Parrenin F. Petit J. R. Ritz C. Scarchilli C. Schilt A. Schüpbach S. Schwander J. Selmo E. Severi M. Stocker T. Udisti R. |
author_sort |
STENNI, BARBARA |
title |
Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation |
title_short |
Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation |
title_full |
Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation |
title_fullStr |
Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation |
title_full_unstemmed |
Expression of the bipolar see-saw in Antarctic climate records during the last deglaciation |
title_sort |
expression of the bipolar see-saw in antarctic climate records during the last deglaciation |
publishDate |
2011 |
url |
http://hdl.handle.net/11368/2626903 https://doi.org/10.1038/NGEO1026 |
long_lat |
ENVELOPE(158.000,158.000,-73.000,-73.000) |
geographic |
Antarctic The Antarctic East Antarctica Ross Sea Greenland Pacific Talos Dome |
geographic_facet |
Antarctic The Antarctic East Antarctica Ross Sea Greenland Pacific Talos Dome |
genre |
Antarc* Antarctic Antarctica East Antarctica Greenland ice core Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Greenland ice core Ross Sea |
op_relation |
volume:4 firstpage:46 lastpage:49 numberofpages:4 journal:NATURE GEOSCIENCE http://hdl.handle.net/11368/2626903 doi:10.1038/NGEO1026 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-78650555903 |
op_doi |
https://doi.org/10.1038/NGEO1026 |
container_title |
Nature Geoscience |
container_volume |
4 |
container_issue |
1 |
container_start_page |
46 |
op_container_end_page |
49 |
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1766025909709570048 |