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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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 |
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AAAS Resource Center (American Association for the Advancement of Science) |
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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 |
genre_facet |
Southern Ocean |
op_source |
Science volume 335, issue 6068, page 557-561 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1208163 |
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Science |
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335 |
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6068 |
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557 |
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561 |
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