Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt
The effect of sea ice melt on the carbonate chemistry of surface waters in the Weddell-Scotia Confluence, Southern Ocean, was investigated during January 2008. Contrasting concentrations of dissolved inorganic carbon (DIC), total alkalinity (TA) and the fugacity of carbon dioxide (fCO(2)) were obser...
Published in: | Tellus B: Chemical and Physical Meteorology |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/12539/ http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2010.00496.x/full |
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ftnerc:oai:nora.nerc.ac.uk:12539 2023-05-15T13:45:11+02:00 Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt Jones, Elizabeth M. Bakker, Dorothee C.E. Venables, Hugh J. Whitehouse, Michael J. Korb, Rebecca E. Watson, Andrew J. 2010 http://nora.nerc.ac.uk/id/eprint/12539/ http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2010.00496.x/full unknown Wiley Jones, Elizabeth M.; Bakker, Dorothee C.E.; Venables, Hugh J.; Whitehouse, Michael J.; Korb, Rebecca E.; Watson, Andrew J. 2010 Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt. Tellus Series B, 62 (5). 621-635. https://doi.org/10.1111/j.1600-0889.2010.00496.x <https://doi.org/10.1111/j.1600-0889.2010.00496.x> Marine Sciences Glaciology Chemistry Publication - Article PeerReviewed 2010 ftnerc https://doi.org/10.1111/j.1600-0889.2010.00496.x 2023-02-04T19:28:04Z The effect of sea ice melt on the carbonate chemistry of surface waters in the Weddell-Scotia Confluence, Southern Ocean, was investigated during January 2008. Contrasting concentrations of dissolved inorganic carbon (DIC), total alkalinity (TA) and the fugacity of carbon dioxide (fCO(2)) were observed in and around the receding sea ice edge. The precipitation of carbonate minerals such as ikaite (CaCO3 center dot 6H(2)O) in sea ice brine has the net effect of decreasing DIC and TA and increasing the fCO(2) in the brine. Deficits in DIC up to 12 +/- 3 mu mol kg-1 in the marginal ice zone (MIZ) were consistent with the release of DIC-poor brines to surface waters during sea ice melt. Biological utilization of carbon was the dominant processes and accounted for 41 +/- 1 mu mol kg-1 of the summer DIC deficit. The data suggest that the combined effects of biological carbon uptake and the precipitation of carbonates created substantial undersaturation in fCO(2) of 95 mu atm in the MIZ during summer sea ice melt. Further work is required to improve the understanding of ikaite chemistry in Antarctic sea ice and its importance for the sea ice carbon pump. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Weddell Tellus B: Chemical and Physical Meteorology 62 5 621 635 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Glaciology Chemistry |
spellingShingle |
Marine Sciences Glaciology Chemistry Jones, Elizabeth M. Bakker, Dorothee C.E. Venables, Hugh J. Whitehouse, Michael J. Korb, Rebecca E. Watson, Andrew J. Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt |
topic_facet |
Marine Sciences Glaciology Chemistry |
description |
The effect of sea ice melt on the carbonate chemistry of surface waters in the Weddell-Scotia Confluence, Southern Ocean, was investigated during January 2008. Contrasting concentrations of dissolved inorganic carbon (DIC), total alkalinity (TA) and the fugacity of carbon dioxide (fCO(2)) were observed in and around the receding sea ice edge. The precipitation of carbonate minerals such as ikaite (CaCO3 center dot 6H(2)O) in sea ice brine has the net effect of decreasing DIC and TA and increasing the fCO(2) in the brine. Deficits in DIC up to 12 +/- 3 mu mol kg-1 in the marginal ice zone (MIZ) were consistent with the release of DIC-poor brines to surface waters during sea ice melt. Biological utilization of carbon was the dominant processes and accounted for 41 +/- 1 mu mol kg-1 of the summer DIC deficit. The data suggest that the combined effects of biological carbon uptake and the precipitation of carbonates created substantial undersaturation in fCO(2) of 95 mu atm in the MIZ during summer sea ice melt. Further work is required to improve the understanding of ikaite chemistry in Antarctic sea ice and its importance for the sea ice carbon pump. |
format |
Article in Journal/Newspaper |
author |
Jones, Elizabeth M. Bakker, Dorothee C.E. Venables, Hugh J. Whitehouse, Michael J. Korb, Rebecca E. Watson, Andrew J. |
author_facet |
Jones, Elizabeth M. Bakker, Dorothee C.E. Venables, Hugh J. Whitehouse, Michael J. Korb, Rebecca E. Watson, Andrew J. |
author_sort |
Jones, Elizabeth M. |
title |
Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt |
title_short |
Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt |
title_full |
Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt |
title_fullStr |
Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt |
title_full_unstemmed |
Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt |
title_sort |
rapid changes in surface water carbonate chemistry during antarctic sea ice melt |
publisher |
Wiley |
publishDate |
2010 |
url |
http://nora.nerc.ac.uk/id/eprint/12539/ http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0889.2010.00496.x/full |
geographic |
Antarctic Southern Ocean Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
Jones, Elizabeth M.; Bakker, Dorothee C.E.; Venables, Hugh J.; Whitehouse, Michael J.; Korb, Rebecca E.; Watson, Andrew J. 2010 Rapid changes in surface water carbonate chemistry during Antarctic sea ice melt. Tellus Series B, 62 (5). 621-635. https://doi.org/10.1111/j.1600-0889.2010.00496.x <https://doi.org/10.1111/j.1600-0889.2010.00496.x> |
op_doi |
https://doi.org/10.1111/j.1600-0889.2010.00496.x |
container_title |
Tellus B: Chemical and Physical Meteorology |
container_volume |
62 |
container_issue |
5 |
container_start_page |
621 |
op_container_end_page |
635 |
_version_ |
1766215150192295936 |