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 (C-ant) are made at three locations. Along the Prime Meridian, TCO2 is observed t...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://hdl.handle.net/11370/08bea828-b159-439e-8386-aba379978385 https://research.rug.nl/en/publications/08bea828-b159-439e-8386-aba379978385 https://doi.org/10.1098/rsta.2013.0056 |
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ftunigroningenpu:oai:pure.rug.nl:publications/08bea828-b159-439e-8386-aba379978385 2024-06-02T07:56:41+00:00 Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre van Heuven, Steven M. A. C. Hoppema, Mario Jones, Elisabeth Marie de Baar, Henricus 2014-07-13 https://hdl.handle.net/11370/08bea828-b159-439e-8386-aba379978385 https://research.rug.nl/en/publications/08bea828-b159-439e-8386-aba379978385 https://doi.org/10.1098/rsta.2013.0056 eng eng https://research.rug.nl/en/publications/08bea828-b159-439e-8386-aba379978385 info:eu-repo/semantics/closedAccess van Heuven , S M A C , Hoppema , M , Jones , E M & de Baar , H 2014 , ' Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre ' , Philosophical transactions of the royal society a-Mathematical physical and engineering sciences , vol. 372 , no. 2019 , 20130056 . https://doi.org/10.1098/rsta.2013.0056 anthropogenic carbon macronutrients dissolved oxygen Weddell Sea Antarctic Weddell Sea Bottom Water ANTARCTIC BOTTOM WATER CARBON-DIOXIDE SEA OCEAN VARIABILITY TRANSPORT STORAGE EXPORT article 2014 ftunigroningenpu https://doi.org/10.1098/rsta.2013.0056 2024-05-07T19:48:36Z 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 (C-ant) 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 mu mol 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 thiswater 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 University of Groningen research database 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 |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
anthropogenic carbon macronutrients dissolved oxygen Weddell Sea Antarctic Weddell Sea Bottom Water ANTARCTIC BOTTOM WATER CARBON-DIOXIDE SEA OCEAN VARIABILITY TRANSPORT STORAGE EXPORT |
spellingShingle |
anthropogenic carbon macronutrients dissolved oxygen Weddell Sea Antarctic Weddell Sea Bottom Water ANTARCTIC BOTTOM WATER CARBON-DIOXIDE SEA OCEAN VARIABILITY TRANSPORT STORAGE EXPORT van Heuven, Steven M. A. C. Hoppema, Mario Jones, Elisabeth Marie de Baar, Henricus Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre |
topic_facet |
anthropogenic carbon macronutrients dissolved oxygen Weddell Sea Antarctic Weddell Sea Bottom Water ANTARCTIC BOTTOM WATER CARBON-DIOXIDE SEA OCEAN VARIABILITY TRANSPORT STORAGE EXPORT |
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 (C-ant) 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 mu mol 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 thiswater 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, Steven M. A. C. Hoppema, Mario Jones, Elisabeth Marie de Baar, Henricus |
author_facet |
van Heuven, Steven M. A. C. Hoppema, Mario Jones, Elisabeth Marie de Baar, Henricus |
author_sort |
van Heuven, Steven 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://hdl.handle.net/11370/08bea828-b159-439e-8386-aba379978385 https://research.rug.nl/en/publications/08bea828-b159-439e-8386-aba379978385 https://doi.org/10.1098/rsta.2013.0056 |
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 |
van Heuven , S M A C , Hoppema , M , Jones , E M & de Baar , H 2014 , ' Rapid invasion of anthropogenic CO2 into the deep circulation of the Weddell Gyre ' , Philosophical transactions of the royal society a-Mathematical physical and engineering sciences , vol. 372 , no. 2019 , 20130056 . https://doi.org/10.1098/rsta.2013.0056 |
op_relation |
https://research.rug.nl/en/publications/08bea828-b159-439e-8386-aba379978385 |
op_rights |
info:eu-repo/semantics/closedAccess |
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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1800757934009876480 |