Southern Ocean CO 2 sink: the contribution of the sea ice
We report first direct measurements of the partial pressure of CO 2 (pCO 2 ) within Antarctic pack sea ice brines and related CO 2 fluxes across the air-ice interface. From late winter to summer, brines encased in the ice change from a CO 2 large oversaturation, relative to the atmosphere, to a mark...
Published in: | Journal of Geophysical Research: Oceans |
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ftvliz:oai:oma.vliz.be:246920 2023-05-15T13:59:38+02:00 Southern Ocean CO 2 sink: the contribution of the sea ice Delille, B. Vancoppenolle, M Geilfus, X Tilbrook, B Lannuzel, D Schoemann, V. Becquevort, S. Carnat, G. Delille, D Lancelot, C. Chou, L. Dieckmann, S Tison, J.-L. 2014 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=246920 en eng info:eu-repo/semantics/altIdentifier/wos/000343879200043 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1002/2014JC009941 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=246920 info:eu-repo/semantics/restrictedAccess %3Ci%3EJ.+Geophys.+Res.+Oceans%28119%29%3C%2Fi%3E%3A+6340-6355.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1002%2F2014JC009941%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1002%2F2014JC009941%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftvliz https://doi.org/10.1002/2014JC009941 2022-05-01T10:26:40Z We report first direct measurements of the partial pressure of CO 2 (pCO 2 ) within Antarctic pack sea ice brines and related CO 2 fluxes across the air-ice interface. From late winter to summer, brines encased in the ice change from a CO 2 large oversaturation, relative to the atmosphere, to a marked undersaturation while the underlying oceanic waters remains slightly oversaturated. The decrease from winter to summer of pCO 2 in the brines is driven by dilution with melting ice, dissolution of carbonate crystals, and net primary production. As the ice warms, its permeability increases, allowing CO 2 transfer at the air-sea ice interface. The sea ice changes from a transient source to a sink for atmospheric CO 2 . We upscale these observations to the whole Antarctic sea ice cover using the NEMO-LIM3 large-scale sea ice-ocean and provide first estimates of spring and summer CO 2 uptake from the atmosphere by Antarctic sea ice. Over the spring-summer period, the Antarctic sea ice cover is a net sink of atmospheric CO 2 of 0.029 Pg C, about 58% of the estimated annual uptake from the Southern Ocean. Sea ice then contributes significantly to the sink of CO 2 of the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Antarctic Southern Ocean The Antarctic Journal of Geophysical Research: Oceans 119 9 6340 6355 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
We report first direct measurements of the partial pressure of CO 2 (pCO 2 ) within Antarctic pack sea ice brines and related CO 2 fluxes across the air-ice interface. From late winter to summer, brines encased in the ice change from a CO 2 large oversaturation, relative to the atmosphere, to a marked undersaturation while the underlying oceanic waters remains slightly oversaturated. The decrease from winter to summer of pCO 2 in the brines is driven by dilution with melting ice, dissolution of carbonate crystals, and net primary production. As the ice warms, its permeability increases, allowing CO 2 transfer at the air-sea ice interface. The sea ice changes from a transient source to a sink for atmospheric CO 2 . We upscale these observations to the whole Antarctic sea ice cover using the NEMO-LIM3 large-scale sea ice-ocean and provide first estimates of spring and summer CO 2 uptake from the atmosphere by Antarctic sea ice. Over the spring-summer period, the Antarctic sea ice cover is a net sink of atmospheric CO 2 of 0.029 Pg C, about 58% of the estimated annual uptake from the Southern Ocean. Sea ice then contributes significantly to the sink of CO 2 of the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Delille, B. Vancoppenolle, M Geilfus, X Tilbrook, B Lannuzel, D Schoemann, V. Becquevort, S. Carnat, G. Delille, D Lancelot, C. Chou, L. Dieckmann, S Tison, J.-L. |
spellingShingle |
Delille, B. Vancoppenolle, M Geilfus, X Tilbrook, B Lannuzel, D Schoemann, V. Becquevort, S. Carnat, G. Delille, D Lancelot, C. Chou, L. Dieckmann, S Tison, J.-L. Southern Ocean CO 2 sink: the contribution of the sea ice |
author_facet |
Delille, B. Vancoppenolle, M Geilfus, X Tilbrook, B Lannuzel, D Schoemann, V. Becquevort, S. Carnat, G. Delille, D Lancelot, C. Chou, L. Dieckmann, S Tison, J.-L. |
author_sort |
Delille, B. |
title |
Southern Ocean CO 2 sink: the contribution of the sea ice |
title_short |
Southern Ocean CO 2 sink: the contribution of the sea ice |
title_full |
Southern Ocean CO 2 sink: the contribution of the sea ice |
title_fullStr |
Southern Ocean CO 2 sink: the contribution of the sea ice |
title_full_unstemmed |
Southern Ocean CO 2 sink: the contribution of the sea ice |
title_sort |
southern ocean co 2 sink: the contribution of the sea ice |
publishDate |
2014 |
url |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=246920 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
%3Ci%3EJ.+Geophys.+Res.+Oceans%28119%29%3C%2Fi%3E%3A+6340-6355.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1002%2F2014JC009941%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1002%2F2014JC009941%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000343879200043 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1002/2014JC009941 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=246920 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/2014JC009941 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
9 |
container_start_page |
6340 |
op_container_end_page |
6355 |
_version_ |
1766268305366056960 |