North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate
The precise reason for the differences and out-of-phase relationship between the abrupt Dansgaard-Oeschger warmings in the Nordic seas and Greenland ice cores and the gradual warmings in the southcentral Atlantic and Antarctic ice cores is poorly understood. Termed the bipolar seesaw, the difference...
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Online Access: | https://pure.au.dk/portal/da/publications/north-atlantic-warming-during-dansgaardoeschger-events-synchronous-with-antarctic-warming-and-outofphase-with-greenland-climate(9a024687-c0f9-4e1f-a755-339eca379392).html https://doi.org/10.1038/srep20535 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/9a024687-c0f9-4e1f-a755-339eca379392 2023-05-15T13:39:26+02:00 North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate Rasmussen, Tine L. Thomsen, Erik Moros, Matthias 2016-02-05 https://pure.au.dk/portal/da/publications/north-atlantic-warming-during-dansgaardoeschger-events-synchronous-with-antarctic-warming-and-outofphase-with-greenland-climate(9a024687-c0f9-4e1f-a755-339eca379392).html https://doi.org/10.1038/srep20535 eng eng info:eu-repo/semantics/openAccess Rasmussen , T L , Thomsen , E & Moros , M 2016 , ' North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate ' , Scientific Reports , vol. 6 , 20535 . https://doi.org/10.1038/srep20535 article 2016 ftuniaarhuspubl https://doi.org/10.1038/srep20535 2020-10-14T22:44:08Z The precise reason for the differences and out-of-phase relationship between the abrupt Dansgaard-Oeschger warmings in the Nordic seas and Greenland ice cores and the gradual warmings in the southcentral Atlantic and Antarctic ice cores is poorly understood. Termed the bipolar seesaw, the differences are apparently linked to perturbations in the ocean circulation pattern. Here we show that surface and intermediate-depth water south of Iceland warmed gradually synchronously with the Antarctic warming and out of phase with the abrupt warming of the Nordic seas and over Greenland. The hinge line between areas showing abrupt and gradual warming was close to the Greenland-Scotland Ridge and the marine system appears to be a 'push-and-pull' system rather than a seesaw system. 'Pull' during the warm interstadials, when convection in the Nordic seas was active; 'push' during the cold stadials, when convection stopped and warm water from the south-central Atlantic pushed northward gradually warming the North Atlantic and Nordic seas. Article in Journal/Newspaper Antarc* Antarctic Dansgaard-Oeschger events Greenland Greenland ice cores Greenland-Scotland Ridge Iceland Nordic Seas North Atlantic Aarhus University: Research Antarctic Greenland The Antarctic Scientific Reports 6 1 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
The precise reason for the differences and out-of-phase relationship between the abrupt Dansgaard-Oeschger warmings in the Nordic seas and Greenland ice cores and the gradual warmings in the southcentral Atlantic and Antarctic ice cores is poorly understood. Termed the bipolar seesaw, the differences are apparently linked to perturbations in the ocean circulation pattern. Here we show that surface and intermediate-depth water south of Iceland warmed gradually synchronously with the Antarctic warming and out of phase with the abrupt warming of the Nordic seas and over Greenland. The hinge line between areas showing abrupt and gradual warming was close to the Greenland-Scotland Ridge and the marine system appears to be a 'push-and-pull' system rather than a seesaw system. 'Pull' during the warm interstadials, when convection in the Nordic seas was active; 'push' during the cold stadials, when convection stopped and warm water from the south-central Atlantic pushed northward gradually warming the North Atlantic and Nordic seas. |
format |
Article in Journal/Newspaper |
author |
Rasmussen, Tine L. Thomsen, Erik Moros, Matthias |
spellingShingle |
Rasmussen, Tine L. Thomsen, Erik Moros, Matthias North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate |
author_facet |
Rasmussen, Tine L. Thomsen, Erik Moros, Matthias |
author_sort |
Rasmussen, Tine L. |
title |
North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate |
title_short |
North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate |
title_full |
North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate |
title_fullStr |
North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate |
title_full_unstemmed |
North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate |
title_sort |
north atlantic warming during dansgaard-oeschger events synchronous with antarctic warming and out-of-phase with greenland climate |
publishDate |
2016 |
url |
https://pure.au.dk/portal/da/publications/north-atlantic-warming-during-dansgaardoeschger-events-synchronous-with-antarctic-warming-and-outofphase-with-greenland-climate(9a024687-c0f9-4e1f-a755-339eca379392).html https://doi.org/10.1038/srep20535 |
geographic |
Antarctic Greenland The Antarctic |
geographic_facet |
Antarctic Greenland The Antarctic |
genre |
Antarc* Antarctic Dansgaard-Oeschger events Greenland Greenland ice cores Greenland-Scotland Ridge Iceland Nordic Seas North Atlantic |
genre_facet |
Antarc* Antarctic Dansgaard-Oeschger events Greenland Greenland ice cores Greenland-Scotland Ridge Iceland Nordic Seas North Atlantic |
op_source |
Rasmussen , T L , Thomsen , E & Moros , M 2016 , ' North Atlantic warming during Dansgaard-Oeschger events synchronous with Antarctic warming and out-of-phase with Greenland climate ' , Scientific Reports , vol. 6 , 20535 . https://doi.org/10.1038/srep20535 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/srep20535 |
container_title |
Scientific Reports |
container_volume |
6 |
container_issue |
1 |
_version_ |
1766118864438951936 |