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Role of wind stress and heat fluxes in interannual-to-decadal variability of air-sea CO2 and O2 fluxes in the North Atlantic

Record type: Article

A coupled ecosystem-circulation model of the North Atlantic is used to examine the individual contributions by wind stress and surface heat fluxes to naturally driven interannual-to-decadal variability of air-sea fluxes of CO2 and O2 during 1948–2002. The model results indicate that variations in O2 fluxes are mainly driven by variations in surface heat fluxes in the extratropics (15°N to 70°N), and by wind stress in the tropics (10°S to 15°N). Conversely, variations in simulated CO2 fluxes are predominantly wind-stress driven over the entire model domain (18°S to 70°N); while variability in piston velocity and surface heat fluxes is less important. The simulated uptake of O2 by the North Atlantic amounts to 70 ± 11 Tmol yr?1 to which the subpolar region (45°N to 70°N) contributes by 62 ± 10 Tmol yr?1. Whereas the subpolar North Atlantic takes up more than 2/3 of the total carbon absorbed by the North Atlantic in our model (about 0.3 Pg C yr?1), interannual variability of air-sea CO2 fluxes reaches similar values (about 0.01 Pg C yr?1 each) in the subpolar (45°N to 70°N), the subtropical (15°N to 45°N) and the equatorial (10°S to 15°N) Atlantic.

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Citation

Friedrich, T., Oschlies, A. and Eden, C. (2006) Role of wind stress and heat fluxes in interannual-to-decadal variability of air-sea CO2 and O2 fluxes in the North Atlantic Geophysical Research Letters, 33, (21), L21S04. (doi:10.1029/2006GL026538).

More information

Published date: 2006
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 44682
URI: http://eprints.soton.ac.uk/id/eprint/44682
ISSN: 0094-8276
PURE UUID: b3c0ace1-b2a7-4d2a-9eaa-abf67860282b

Catalogue record

Date deposited: 08 Mar 2007
Last modified: 17 Jul 2017 15:14

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Contributors

Author: T. Friedrich
Author: A. Oschlies
Author: C. Eden

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