The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation

A Drop in the Ocean The concentration of atmospheric CO 2 rose by ∼80 parts per million (ppm), from ∼190 to 270 ppm, during the last deglaciation. It is widely believed that the primary source of that CO 2 was the deep Southern Ocean. Burke and Robinson (p. 557 , published online 15 December) presen...

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Published in:Science
Main Authors: Burke, Andrea, Robinson, Laura F.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 2012
Subjects:
Online Access:http://dx.doi.org/10.1126/science.1208163
https://www.science.org/doi/pdf/10.1126/science.1208163
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spelling craaas:10.1126/science.1208163 2024-06-23T07:56:54+00:00 The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation Burke, Andrea Robinson, Laura F. 2012 http://dx.doi.org/10.1126/science.1208163 https://www.science.org/doi/pdf/10.1126/science.1208163 en eng American Association for the Advancement of Science (AAAS) Science volume 335, issue 6068, page 557-561 ISSN 0036-8075 1095-9203 journal-article 2012 craaas https://doi.org/10.1126/science.1208163 2024-06-06T04:00:44Z A Drop in the Ocean The concentration of atmospheric CO 2 rose by ∼80 parts per million (ppm), from ∼190 to 270 ppm, during the last deglaciation. It is widely believed that the primary source of that CO 2 was the deep Southern Ocean. Burke and Robinson (p. 557 , published online 15 December) present a 25,000-year-long record of the radiocarbon content of deep-sea corals collected from the Southern Ocean, which shows evidence of the 14 C-depletion that must have accompanied CO 2 sequestration. 14 C depletion and ocean stratification ended between 15,000 and 14,000 years ago, in a manner consistent with the transfer of large amounts of CO 2 from the deep Southern Ocean to the atmosphere. The observed 14 C drop can explain the atmospheric CO 2 rise between 17,500 and 14,500 years ago, adding support to the existing model of deglacial CO 2 dynamics. Article in Journal/Newspaper Southern Ocean AAAS Resource Center (American Association for the Advancement of Science) Southern Ocean Science 335 6068 557 561
institution Open Polar
collection AAAS Resource Center (American Association for the Advancement of Science)
op_collection_id craaas
language English
description A Drop in the Ocean The concentration of atmospheric CO 2 rose by ∼80 parts per million (ppm), from ∼190 to 270 ppm, during the last deglaciation. It is widely believed that the primary source of that CO 2 was the deep Southern Ocean. Burke and Robinson (p. 557 , published online 15 December) present a 25,000-year-long record of the radiocarbon content of deep-sea corals collected from the Southern Ocean, which shows evidence of the 14 C-depletion that must have accompanied CO 2 sequestration. 14 C depletion and ocean stratification ended between 15,000 and 14,000 years ago, in a manner consistent with the transfer of large amounts of CO 2 from the deep Southern Ocean to the atmosphere. The observed 14 C drop can explain the atmospheric CO 2 rise between 17,500 and 14,500 years ago, adding support to the existing model of deglacial CO 2 dynamics.
format Article in Journal/Newspaper
author Burke, Andrea
Robinson, Laura F.
spellingShingle Burke, Andrea
Robinson, Laura F.
The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation
author_facet Burke, Andrea
Robinson, Laura F.
author_sort Burke, Andrea
title The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation
title_short The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation
title_full The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation
title_fullStr The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation
title_full_unstemmed The Southern Ocean’s Role in Carbon Exchange During the Last Deglaciation
title_sort southern ocean’s role in carbon exchange during the last deglaciation
publisher American Association for the Advancement of Science (AAAS)
publishDate 2012
url http://dx.doi.org/10.1126/science.1208163
https://www.science.org/doi/pdf/10.1126/science.1208163
geographic Southern Ocean
geographic_facet Southern Ocean
genre Southern Ocean
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op_source Science
volume 335, issue 6068, page 557-561
ISSN 0036-8075 1095-9203
op_doi https://doi.org/10.1126/science.1208163
container_title Science
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