Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre
Data are presented for total carbon dioxide (TCO 2 ), oxygen and nutrients from 14 cruises covering two repeat sections across the Weddell Gyre, from 1973 to 2010. Assessments of the rate of increase in anthropogenic CO 2 (C ant ) are made at three locations. Along the Prime Meridian, TCO 2 is obser...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1098/rsta.2013.0056 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2013.0056 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2013.0056 |
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crroyalsociety:10.1098/rsta.2013.0056 2024-06-02T07:55:50+00:00 Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre van Heuven, Steven M. A. C. Hoppema, Mario Jones, Elizabeth M. de Baar, Hein J. W. 2014 http://dx.doi.org/10.1098/rsta.2013.0056 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2013.0056 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2013.0056 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 372, issue 2019, page 20130056 ISSN 1364-503X 1471-2962 journal-article 2014 crroyalsociety https://doi.org/10.1098/rsta.2013.0056 2024-05-07T14:16:21Z Data are presented for total carbon dioxide (TCO 2 ), oxygen and nutrients from 14 cruises covering two repeat sections across the Weddell Gyre, from 1973 to 2010. Assessments of the rate of increase in anthropogenic CO 2 (C ant ) are made at three locations. Along the Prime Meridian, TCO 2 is observed to steadily increase in the bottom water. Accompanying changes in silicate, nitrate and oxygen confirm the non-steady state of the Weddell circulation. The rate of increase in TCO 2 of +0.12±0.05 μmol kg −1 yr −1 therefore poses an upper limit to the rate of increase in C ant . By contrast, the bottom water located in the central Weddell Sea exhibits no significant increase in TCO 2 , suggesting that this water is less well ventilated at the southern margins of the Weddell Sea. At the tip of the Antarctic Peninsula (i.e. the formation region of the bottom water found at the Prime Meridian), the high rate of increase in TCO 2 over time observed at the lowest temperatures suggests that nearly full equilibration occurs with the anthropogenic CO 2 of the atmosphere. This observation constitutes rare evidence for the possibility that ice cover is not a major impediment for uptake of C ant in this prominent deep water formation region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Weddell Sea The Royal Society Antarctic The Antarctic Antarctic Peninsula Weddell Sea Weddell Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372 2019 20130056 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
Data are presented for total carbon dioxide (TCO 2 ), oxygen and nutrients from 14 cruises covering two repeat sections across the Weddell Gyre, from 1973 to 2010. Assessments of the rate of increase in anthropogenic CO 2 (C ant ) are made at three locations. Along the Prime Meridian, TCO 2 is observed to steadily increase in the bottom water. Accompanying changes in silicate, nitrate and oxygen confirm the non-steady state of the Weddell circulation. The rate of increase in TCO 2 of +0.12±0.05 μmol kg −1 yr −1 therefore poses an upper limit to the rate of increase in C ant . By contrast, the bottom water located in the central Weddell Sea exhibits no significant increase in TCO 2 , suggesting that this water is less well ventilated at the southern margins of the Weddell Sea. At the tip of the Antarctic Peninsula (i.e. the formation region of the bottom water found at the Prime Meridian), the high rate of increase in TCO 2 over time observed at the lowest temperatures suggests that nearly full equilibration occurs with the anthropogenic CO 2 of the atmosphere. This observation constitutes rare evidence for the possibility that ice cover is not a major impediment for uptake of C ant in this prominent deep water formation region. |
format |
Article in Journal/Newspaper |
author |
van Heuven, Steven M. A. C. Hoppema, Mario Jones, Elizabeth M. de Baar, Hein J. W. |
spellingShingle |
van Heuven, Steven M. A. C. Hoppema, Mario Jones, Elizabeth M. de Baar, Hein J. W. Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre |
author_facet |
van Heuven, Steven M. A. C. Hoppema, Mario Jones, Elizabeth M. de Baar, Hein J. W. |
author_sort |
van Heuven, Steven M. A. C. |
title |
Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre |
title_short |
Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre |
title_full |
Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre |
title_fullStr |
Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre |
title_full_unstemmed |
Rapid invasion of anthropogenic CO 2 into the deep circulation of the Weddell Gyre |
title_sort |
rapid invasion of anthropogenic co 2 into the deep circulation of the weddell gyre |
publisher |
The Royal Society |
publishDate |
2014 |
url |
http://dx.doi.org/10.1098/rsta.2013.0056 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2013.0056 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2013.0056 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Weddell |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 372, issue 2019, page 20130056 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2013.0056 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
372 |
container_issue |
2019 |
container_start_page |
20130056 |
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1800751540730855424 |