South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon
The exchange of mass, heat, salt and anthropogenic carbon (Cant) between the South Atlantic, south of 24°S, and adjacent ocean basins is estimated from hydrographic data obtained during 2008–2009 using an inverse method. Transports of anthropogenic carbon are calculated across the western (Drake Pas...
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ftsouthampton:oai:eprints.soton.ac.uk:407632 2023-07-30T03:59:15+02:00 South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon Evans, G.R. McDonagh, E.L. King, B.A. Bryden, H.L. Bakker, D.C.E. Brown, P.J. Schuster, U. Speer, K.G. Van Heuven, S.M.A.C. 2017-02-01 text https://eprints.soton.ac.uk/407632/ https://eprints.soton.ac.uk/407632/1/Evans_et_al_2017_PiO_Accepted.pdf en English eng https://eprints.soton.ac.uk/407632/1/Evans_et_al_2017_PiO_Accepted.pdf Evans, G.R., McDonagh, E.L., King, B.A., Bryden, H.L., Bakker, D.C.E., Brown, P.J., Schuster, U., Speer, K.G. and Van Heuven, S.M.A.C. (2017) South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon. Progress in Oceanography, 151, 62-82. (doi:10.1016/j.pocean.2016.11.005 <http://dx.doi.org/10.1016/j.pocean.2016.11.005>). cc_by_nc_nd_4 Article PeerReviewed 2017 ftsouthampton https://doi.org/10.1016/j.pocean.2016.11.005 2023-07-09T22:14:06Z The exchange of mass, heat, salt and anthropogenic carbon (Cant) between the South Atlantic, south of 24°S, and adjacent ocean basins is estimated from hydrographic data obtained during 2008–2009 using an inverse method. Transports of anthropogenic carbon are calculated across the western (Drake Passage), eastern (30°E) and northern (24°S) boundaries. The freshwater overturning transport of 0.09 Sv is southward, consistent with an overturning circulation that exports freshwater from the North Atlantic, and consistent with a bistable Meridional Overturning Circulation (MOC), under conditions of excess freshwater perturbation. At 30°E, net eastward Antarctic Circumpolar Current (ACC) transport, south of the Subtropical Front, is compensated by a 15.9 ± 2.3 Sv westward flow along the Antarctic boundary. The region as a whole is a substantial sink for atmospheric anthropogenic carbon of 0.51 ± 0.37 Pg C yr−1, of which 0.18 ± 0.12 Pg C yr−1 accumulates and is stored within the water column. At 24°S, a 20.2 Sv meridional overturning is associated with a 0.11 Pg C yr−1 Cant overturning. The remainder is transported into the Atlantic Ocean north of 24°S (0.28 ± 0.16 Pg C yr−1) and Indian sector of Southern Ocean (1.12 ± 0.43 Pg C yr−1), having been enhanced by inflow through Drake Passage (1.07 ± 0.44 Pg C yr−1). This underlines the importance of the South Atlantic as a crucial element of the anthropogenic carbon sink in the global oceans. Article in Journal/Newspaper Antarc* Antarctic Drake Passage North Atlantic Southern Ocean University of Southampton: e-Prints Soton Antarctic Drake Passage Indian Southern Ocean The Antarctic Progress in Oceanography 151 62 82 |
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Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
The exchange of mass, heat, salt and anthropogenic carbon (Cant) between the South Atlantic, south of 24°S, and adjacent ocean basins is estimated from hydrographic data obtained during 2008–2009 using an inverse method. Transports of anthropogenic carbon are calculated across the western (Drake Passage), eastern (30°E) and northern (24°S) boundaries. The freshwater overturning transport of 0.09 Sv is southward, consistent with an overturning circulation that exports freshwater from the North Atlantic, and consistent with a bistable Meridional Overturning Circulation (MOC), under conditions of excess freshwater perturbation. At 30°E, net eastward Antarctic Circumpolar Current (ACC) transport, south of the Subtropical Front, is compensated by a 15.9 ± 2.3 Sv westward flow along the Antarctic boundary. The region as a whole is a substantial sink for atmospheric anthropogenic carbon of 0.51 ± 0.37 Pg C yr−1, of which 0.18 ± 0.12 Pg C yr−1 accumulates and is stored within the water column. At 24°S, a 20.2 Sv meridional overturning is associated with a 0.11 Pg C yr−1 Cant overturning. The remainder is transported into the Atlantic Ocean north of 24°S (0.28 ± 0.16 Pg C yr−1) and Indian sector of Southern Ocean (1.12 ± 0.43 Pg C yr−1), having been enhanced by inflow through Drake Passage (1.07 ± 0.44 Pg C yr−1). This underlines the importance of the South Atlantic as a crucial element of the anthropogenic carbon sink in the global oceans. |
format |
Article in Journal/Newspaper |
author |
Evans, G.R. McDonagh, E.L. King, B.A. Bryden, H.L. Bakker, D.C.E. Brown, P.J. Schuster, U. Speer, K.G. Van Heuven, S.M.A.C. |
spellingShingle |
Evans, G.R. McDonagh, E.L. King, B.A. Bryden, H.L. Bakker, D.C.E. Brown, P.J. Schuster, U. Speer, K.G. Van Heuven, S.M.A.C. South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon |
author_facet |
Evans, G.R. McDonagh, E.L. King, B.A. Bryden, H.L. Bakker, D.C.E. Brown, P.J. Schuster, U. Speer, K.G. Van Heuven, S.M.A.C. |
author_sort |
Evans, G.R. |
title |
South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon |
title_short |
South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon |
title_full |
South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon |
title_fullStr |
South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon |
title_full_unstemmed |
South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon |
title_sort |
south atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon |
publishDate |
2017 |
url |
https://eprints.soton.ac.uk/407632/ https://eprints.soton.ac.uk/407632/1/Evans_et_al_2017_PiO_Accepted.pdf |
geographic |
Antarctic Drake Passage Indian Southern Ocean The Antarctic |
geographic_facet |
Antarctic Drake Passage Indian Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Drake Passage North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage North Atlantic Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/407632/1/Evans_et_al_2017_PiO_Accepted.pdf Evans, G.R., McDonagh, E.L., King, B.A., Bryden, H.L., Bakker, D.C.E., Brown, P.J., Schuster, U., Speer, K.G. and Van Heuven, S.M.A.C. (2017) South Atlantic interbasin exchanges of mass, heat, salt and anthropogenic carbon. Progress in Oceanography, 151, 62-82. (doi:10.1016/j.pocean.2016.11.005 <http://dx.doi.org/10.1016/j.pocean.2016.11.005>). |
op_rights |
cc_by_nc_nd_4 |
op_doi |
https://doi.org/10.1016/j.pocean.2016.11.005 |
container_title |
Progress in Oceanography |
container_volume |
151 |
container_start_page |
62 |
op_container_end_page |
82 |
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1772809997709737984 |