Dissolved organic carbon in the North Atlantic Meridional Overturning Circulation

Fontela, Marcos, García-Ibáñez, Maribel I. ORCID: https://orcid.org/0000-0001-5218-0064, Hansell, Dennis A., Mercier, Herlé and Pérez, Fiz F. (2016) Dissolved organic carbon in the North Atlantic Meridional Overturning Circulation. Scientific Reports, 6. ISSN 2045-2322

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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.

Item Type: Article
Uncontrolled Keywords: general ,/dk/atira/pure/subjectarea/asjc/1000
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Depositing User: LivePure Connector
Date Deposited: 02 Oct 2020 23:56
Last Modified: 03 Dec 2023 03:18
URI: https://ueaeprints.uea.ac.uk/id/eprint/77091
DOI: 10.1038/srep26931


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