Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre
Data are presented for total carbon dioxide (TCO2), 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 CO2 (Cant) are made at three locations. Along the Prime Meridian, TCO2 is observed to...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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ftnioz:oai:imis.nioz.nl:241362 2023-05-15T13:47:57+02:00 Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre van Heuven, S.M.A.C. Hoppema, M. Jones, E.M. de Baar, H.J.W. 2014 application/pdf https://www.vliz.be/imisdocs/publications/65/265765.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000337366900007 info:eu-repo/semantics/altIdentifier/doi/oi.org/10.1098/rsta.2013.0056 https://www.vliz.be/imisdocs/publications/65/265765.pdf info:eu-repo/semantics/openAccess %3Ci%3EPhilos.+Trans.+R.+Soc.+Lond.,+A+372%282019%29%3C%2Fi%3E%3A+20130056.+%3Ca+href%3D%22http%3A%2F%2Fdx.doi.org%2F10.1098%2Frsta.2013.0056%22+target%3D%22_blank%22%3Ehttp%3A%2F%2Fdx.doi.org%2F10.1098%2Frsta.2013.0056%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftnioz https://doi.org/10.1098/rsta.2013.0056 2022-05-01T14:00:09Z Data are presented for total carbon dioxide (TCO2), 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 CO2 (Cant) are made at three locations. Along the Prime Meridian, TCO2 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 TCO2 of +0.12±0.05?µmol?kg-1?yr-1 therefore poses an upper limit to the rate of increase in Cant. By contrast, the bottom water located in the central Weddell Sea exhibits no significant increase in TCO2, 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 TCO2 over time observed at the lowest temperatures suggests that nearly full equilibration occurs with the anthropogenic CO2 of the atmosphere. This observation constitutes rare evidence for the possibility that ice cover is not a major impediment for uptake of Cant in this prominent deep water formation region. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Weddell Sea NIOZ Repository (Royal Netherlands Institute for Sea Research) Antarctic Antarctic Peninsula The Antarctic Weddell Weddell Sea Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372 2019 20130056 |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
description |
Data are presented for total carbon dioxide (TCO2), 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 CO2 (Cant) are made at three locations. Along the Prime Meridian, TCO2 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 TCO2 of +0.12±0.05?µmol?kg-1?yr-1 therefore poses an upper limit to the rate of increase in Cant. By contrast, the bottom water located in the central Weddell Sea exhibits no significant increase in TCO2, 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 TCO2 over time observed at the lowest temperatures suggests that nearly full equilibration occurs with the anthropogenic CO2 of the atmosphere. This observation constitutes rare evidence for the possibility that ice cover is not a major impediment for uptake of Cant in this prominent deep water formation region. |
format |
Article in Journal/Newspaper |
author |
van Heuven, S.M.A.C. Hoppema, M. Jones, E.M. de Baar, H.J.W. |
spellingShingle |
van Heuven, S.M.A.C. Hoppema, M. Jones, E.M. de Baar, H.J.W. Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre |
author_facet |
van Heuven, S.M.A.C. Hoppema, M. Jones, E.M. de Baar, H.J.W. |
author_sort |
van Heuven, S.M.A.C. |
title |
Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre |
title_short |
Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre |
title_full |
Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre |
title_fullStr |
Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre |
title_full_unstemmed |
Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre |
title_sort |
rapid invasion of anthropogenic co2 into the deep circulation of the weddell gyre |
publishDate |
2014 |
url |
https://www.vliz.be/imisdocs/publications/65/265765.pdf |
geographic |
Antarctic Antarctic Peninsula The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000337366900007 info:eu-repo/semantics/altIdentifier/doi/oi.org/10.1098/rsta.2013.0056 https://www.vliz.be/imisdocs/publications/65/265765.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
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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1766248043351375872 |