The deglacial evolution of North Atlantic deep convection
Deepwater formation in the North Atlantic by open-ocean convection is an essential component of the overturning circulation of the Atlantic Ocean, which helps regulate global climate. We use water-column radiocarbon reconstructions to examine changes in northeast Atlantic convection since the Last G...
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American Association for the Advancement of Science
2011
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:11088 2023-05-15T13:39:53+02:00 The deglacial evolution of North Atlantic deep convection Thornalley, David J. R. Barker, Stephen Broecker, Wallace S. Elderfield, Henry McCave, I. Nick 2011-01-14 https://orca.cardiff.ac.uk/id/eprint/11088/ https://doi.org/10.1126/science.1196812 unknown American Association for the Advancement of Science Thornalley, David J. R. https://orca.cardiff.ac.uk/view/cardiffauthors/A131861Z.html, Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, Broecker, Wallace S., Elderfield, Henry and McCave, I. Nick 2011. The deglacial evolution of North Atlantic deep convection. Science 331 (6014) , pp. 202-205. 10.1126/science.1196812 https://doi.org/10.1126/science.1196812 doi:10.1126/science.1196812 GC Oceanography QE Geology Article PeerReviewed 2011 ftunivcardiff https://doi.org/10.1126/science.1196812 2022-10-20T22:34:30Z Deepwater formation in the North Atlantic by open-ocean convection is an essential component of the overturning circulation of the Atlantic Ocean, which helps regulate global climate. We use water-column radiocarbon reconstructions to examine changes in northeast Atlantic convection since the Last Glacial Maximum. During cold intervals, we infer a reduction in open-ocean convection and an associated incursion of an extremely radiocarbon (14C)–depleted water mass, interpreted to be Antarctic Intermediate Water. Comparing the timing of deep convection changes in the northeast and northwest Atlantic, we suggest that, despite a strong control on Greenland temperature by northeast Atlantic convection, reduced open-ocean convection in both the northwest and northeast Atlantic is necessary to account for contemporaneous perturbations in atmospheric circulation. Article in Journal/Newspaper Antarc* Antarctic Greenland North Atlantic Northeast Atlantic Northwest Atlantic Cardiff University: ORCA (Online Research @ Cardiff) Antarctic Greenland Science 331 6014 202 205 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
topic |
GC Oceanography QE Geology |
spellingShingle |
GC Oceanography QE Geology Thornalley, David J. R. Barker, Stephen Broecker, Wallace S. Elderfield, Henry McCave, I. Nick The deglacial evolution of North Atlantic deep convection |
topic_facet |
GC Oceanography QE Geology |
description |
Deepwater formation in the North Atlantic by open-ocean convection is an essential component of the overturning circulation of the Atlantic Ocean, which helps regulate global climate. We use water-column radiocarbon reconstructions to examine changes in northeast Atlantic convection since the Last Glacial Maximum. During cold intervals, we infer a reduction in open-ocean convection and an associated incursion of an extremely radiocarbon (14C)–depleted water mass, interpreted to be Antarctic Intermediate Water. Comparing the timing of deep convection changes in the northeast and northwest Atlantic, we suggest that, despite a strong control on Greenland temperature by northeast Atlantic convection, reduced open-ocean convection in both the northwest and northeast Atlantic is necessary to account for contemporaneous perturbations in atmospheric circulation. |
format |
Article in Journal/Newspaper |
author |
Thornalley, David J. R. Barker, Stephen Broecker, Wallace S. Elderfield, Henry McCave, I. Nick |
author_facet |
Thornalley, David J. R. Barker, Stephen Broecker, Wallace S. Elderfield, Henry McCave, I. Nick |
author_sort |
Thornalley, David J. R. |
title |
The deglacial evolution of North Atlantic deep convection |
title_short |
The deglacial evolution of North Atlantic deep convection |
title_full |
The deglacial evolution of North Atlantic deep convection |
title_fullStr |
The deglacial evolution of North Atlantic deep convection |
title_full_unstemmed |
The deglacial evolution of North Atlantic deep convection |
title_sort |
deglacial evolution of north atlantic deep convection |
publisher |
American Association for the Advancement of Science |
publishDate |
2011 |
url |
https://orca.cardiff.ac.uk/id/eprint/11088/ https://doi.org/10.1126/science.1196812 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland North Atlantic Northeast Atlantic Northwest Atlantic |
genre_facet |
Antarc* Antarctic Greenland North Atlantic Northeast Atlantic Northwest Atlantic |
op_relation |
Thornalley, David J. R. https://orca.cardiff.ac.uk/view/cardiffauthors/A131861Z.html, Barker, Stephen https://orca.cardiff.ac.uk/view/cardiffauthors/A015364W.html orcid:0000-0001-7870-6431 orcid:0000-0001-7870-6431, Broecker, Wallace S., Elderfield, Henry and McCave, I. Nick 2011. The deglacial evolution of North Atlantic deep convection. Science 331 (6014) , pp. 202-205. 10.1126/science.1196812 https://doi.org/10.1126/science.1196812 doi:10.1126/science.1196812 |
op_doi |
https://doi.org/10.1126/science.1196812 |
container_title |
Science |
container_volume |
331 |
container_issue |
6014 |
container_start_page |
202 |
op_container_end_page |
205 |
_version_ |
1766125828902486016 |