Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation

The quantitative role of the Atlantic Meridional Overturning Circulation (AMOC) in dissolved organic carbon (DOC) export is evaluated by combining DOC measurements with observed water mass transports. In the eastern subpolar North Atlantic, both upper and lower limbs of the AMOC transport high-DOC w...

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Autores principales: Fontela, Marcos, García-Ibáñez, Maribel I., Hansell, Dennis A., Mercier, Herlé, Pérez, Fiz F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4886255/
https://www.ncbi.nlm.nih.gov/pubmed/27240625
http://dx.doi.org/10.1038/srep26931
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author Fontela, Marcos
García-Ibáñez, Maribel I.
Hansell, Dennis A.
Mercier, Herlé
Pérez, Fiz F.
author_facet Fontela, Marcos
García-Ibáñez, Maribel I.
Hansell, Dennis A.
Mercier, Herlé
Pérez, Fiz F.
author_sort Fontela, Marcos
collection PubMed
description The quantitative role of the Atlantic Meridional Overturning Circulation (AMOC) in dissolved organic carbon (DOC) export is evaluated by combining DOC measurements with observed water mass transports. In the eastern subpolar North Atlantic, both upper and lower limbs of the AMOC transport high-DOC waters. Deep water formation that connects the two limbs of the AMOC results in a high downward export of non-refractory DOC (197 Tg-C·yr(−1)). Subsequent remineralization in the lower limb of the AMOC, between subpolar and subtropical latitudes, consumes 72% of the DOC exported by the whole Atlantic Ocean. The contribution of DOC to the carbon sequestration in the North Atlantic Ocean (62 Tg-C·yr(−1)) is considerable and represents almost a third of the atmospheric CO(2) uptake in the region.
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spelling pubmed-48862552016-06-08 Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation Fontela, Marcos García-Ibáñez, Maribel I. Hansell, Dennis A. Mercier, Herlé Pérez, Fiz F. Sci Rep Article The quantitative role of the Atlantic Meridional Overturning Circulation (AMOC) in dissolved organic carbon (DOC) export is evaluated by combining DOC measurements with observed water mass transports. In the eastern subpolar North Atlantic, both upper and lower limbs of the AMOC transport high-DOC waters. Deep water formation that connects the two limbs of the AMOC results in a high downward export of non-refractory DOC (197 Tg-C·yr(−1)). Subsequent remineralization in the lower limb of the AMOC, between subpolar and subtropical latitudes, consumes 72% of the DOC exported by the whole Atlantic Ocean. The contribution of DOC to the carbon sequestration in the North Atlantic Ocean (62 Tg-C·yr(−1)) is considerable and represents almost a third of the atmospheric CO(2) uptake in the region. Nature Publishing Group 2016-05-31 /pmc/articles/PMC4886255/ /pubmed/27240625 http://dx.doi.org/10.1038/srep26931 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Fontela, Marcos
García-Ibáñez, Maribel I.
Hansell, Dennis A.
Mercier, Herlé
Pérez, Fiz F.
Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation
title Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation
title_full Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation
title_fullStr Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation
title_full_unstemmed Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation
title_short Dissolved Organic Carbon in the North Atlantic Meridional Overturning Circulation
title_sort dissolved organic carbon in the north atlantic meridional overturning circulation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4886255/
https://www.ncbi.nlm.nih.gov/pubmed/27240625
http://dx.doi.org/10.1038/srep26931
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