Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon
18 páginas, 10 figuras, 5 tablas A three-sided box, MedBox, comprising the Strait of Gibraltar, 24 –41 N east of 22 W, was constructed using hydrographic and chemical data from three World Ocean Circulation Experiment cruises in 1997–1998. An extended optimum multiparameter (OMP) analysis resolves t...
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ftcsic:oai:digital.csic.es:10261/51442 2024-02-11T09:58:44+01:00 Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon Álvarez, Marta Pérez, Fiz F. Shoosmith, Deborah R. Bryden, Harry L. 2005 http://hdl.handle.net/10261/51442 https://doi.org/10.1029/2004JC002633 en eng American Geophysical Union http://dx.doi.org/10.1029/2004JC002633 Journal of Geophysical Research - Part C - Oceans 110: C09S03 (2005) 0148-0227 http://hdl.handle.net/10261/51442 doi:10.1029/2004JC002633 2156-2202 open artículo http://purl.org/coar/resource_type/c_6501 2005 ftcsic https://doi.org/10.1029/2004JC002633 2024-01-16T09:38:35Z 18 páginas, 10 figuras, 5 tablas A three-sided box, MedBox, comprising the Strait of Gibraltar, 24 –41 N east of 22 W, was constructed using hydrographic and chemical data from three World Ocean Circulation Experiment cruises in 1997–1998. An extended optimum multiparameter (OMP) analysis resolves the water mass structure in the MedBox. The mass transport is estimated from data and models warranting mass conservation and no deep water formation within the region. Combining the mass transport, the OMP analysis, and the spatial distribution of anthropogenic carbon (CANT), some relevant questions about the Mediterranean Water (MW) formation, transport, and role in the global CO2 cycle are resolved. MWis produced at a rate of 2.7 ± 0.2 Sv in the eastern North Atlantic. It entrains 2.3 Sv of central waters during its formation, including also remnants of Antarctic Intermediate Water. The main advection route of MW is northward, close to the Iberian margin (2.2 Sv), while about 0.5 Sv are exported into the subtropical eastern North Atlantic. The eastern North Atlantic within the MedBox is a strong region of air-sea CANT uptake, 0.7 ± 0.7 mmol m 2 d 1, where CANT is accumulated at a rate of 66 ± 21 kmol s 1 (0.025 GtC yr 1), 17% are taken up through the air-sea interface, and the rest is advected into the area by the circulation. The entrainment of central waters to form MW drives a drawdown of 151 ± 14 kmol s 1 (0.06 GtC yr 1) from the surface to intermediate levels, and 88 ± 8 kmol s 1 (0.03 GtC yr 1) are exported with MW into the North Atlantic, mainly by the horizontal/eddy circulation. M.Á. was funded by the European Union under a Global Change I3P postdoctoral contract. F.F.P. was funded by the CICYT VACLAN project REN2003-08193-C03-02MAR. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic North Atlantic Digital.CSIC (Spanish National Research Council) Antarctic Journal of Geophysical Research 110 C9 |
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Digital.CSIC (Spanish National Research Council) |
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English |
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18 páginas, 10 figuras, 5 tablas A three-sided box, MedBox, comprising the Strait of Gibraltar, 24 –41 N east of 22 W, was constructed using hydrographic and chemical data from three World Ocean Circulation Experiment cruises in 1997–1998. An extended optimum multiparameter (OMP) analysis resolves the water mass structure in the MedBox. The mass transport is estimated from data and models warranting mass conservation and no deep water formation within the region. Combining the mass transport, the OMP analysis, and the spatial distribution of anthropogenic carbon (CANT), some relevant questions about the Mediterranean Water (MW) formation, transport, and role in the global CO2 cycle are resolved. MWis produced at a rate of 2.7 ± 0.2 Sv in the eastern North Atlantic. It entrains 2.3 Sv of central waters during its formation, including also remnants of Antarctic Intermediate Water. The main advection route of MW is northward, close to the Iberian margin (2.2 Sv), while about 0.5 Sv are exported into the subtropical eastern North Atlantic. The eastern North Atlantic within the MedBox is a strong region of air-sea CANT uptake, 0.7 ± 0.7 mmol m 2 d 1, where CANT is accumulated at a rate of 66 ± 21 kmol s 1 (0.025 GtC yr 1), 17% are taken up through the air-sea interface, and the rest is advected into the area by the circulation. The entrainment of central waters to form MW drives a drawdown of 151 ± 14 kmol s 1 (0.06 GtC yr 1) from the surface to intermediate levels, and 88 ± 8 kmol s 1 (0.03 GtC yr 1) are exported with MW into the North Atlantic, mainly by the horizontal/eddy circulation. M.Á. was funded by the European Union under a Global Change I3P postdoctoral contract. F.F.P. was funded by the CICYT VACLAN project REN2003-08193-C03-02MAR. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Álvarez, Marta Pérez, Fiz F. Shoosmith, Deborah R. Bryden, Harry L. |
spellingShingle |
Álvarez, Marta Pérez, Fiz F. Shoosmith, Deborah R. Bryden, Harry L. Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon |
author_facet |
Álvarez, Marta Pérez, Fiz F. Shoosmith, Deborah R. Bryden, Harry L. |
author_sort |
Álvarez, Marta |
title |
Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon |
title_short |
Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon |
title_full |
Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon |
title_fullStr |
Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon |
title_full_unstemmed |
Unaccounted role of Mediterranean Water in the drawdown of anthropogenic carbon |
title_sort |
unaccounted role of mediterranean water in the drawdown of anthropogenic carbon |
publisher |
American Geophysical Union |
publishDate |
2005 |
url |
http://hdl.handle.net/10261/51442 https://doi.org/10.1029/2004JC002633 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic North Atlantic |
genre_facet |
Antarc* Antarctic North Atlantic |
op_relation |
http://dx.doi.org/10.1029/2004JC002633 Journal of Geophysical Research - Part C - Oceans 110: C09S03 (2005) 0148-0227 http://hdl.handle.net/10261/51442 doi:10.1029/2004JC002633 2156-2202 |
op_rights |
open |
op_doi |
https://doi.org/10.1029/2004JC002633 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
C9 |
_version_ |
1790594475226038272 |