Interannual variability of the upper ocean carbon cycle in the northeast Atlantic Ocean

Surface waters in the subtropical gyres have persistently absorbed anthropogenic CO2 at a rate such that their inorganic carbon concentrations have shown a clear upward trend. We report a 10‐year time series of upper‐ocean inorganic carbon observations from the northeastern subtropical Atlantic at E...

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Bibliographic Details
Published in:	Geophysical research letters Vol. 34; no. 7; pp. L07608 - n/a
Main Authors:	Melchor González-Dávila, J. Magdalena Santana-Casiano, Enrique F. González-Dávila
Format:	Journal Article
Language:	English
Published:	Washington, DC American Geophysical Union 01-04-2007 Blackwell Publishing Ltd
Subjects:	Biogeochemical cycles, processes, and modeling Biogeosciences Biological and Chemical Carbon cycling carbon dioxide Diel, seasonal, and annual cycles Earth sciences Earth, ocean, space Exact sciences and technology Global Change Marine Oceanography Time series experiments time-series variability North Atlantic Northeast Atlantic variability carbon dioxide time-series trend-surface analysis Atlantic Ocean upper Quaternary subtropical zone Mixing layer North Atlantic oscillation Winter fluctuations carbon Forcing Cenozoic Vortex Quaternary Time series concentration carbon cycle Sea surface temperature anomalies Interannual variation Dynamical climatology surface water depth correlation Phanerozoic Holocene Atlantic Climate modification
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Summary:	Surface waters in the subtropical gyres have persistently absorbed anthropogenic CO2 at a rate such that their inorganic carbon concentrations have shown a clear upward trend. We report a 10‐year time series of upper‐ocean inorganic carbon observations from the northeastern subtropical Atlantic at ESTOC which indicates significant variability in the inorganic carbon fluxes produced by variations in the Winter mixed‐layer depths, induced by sea surface temperature anomalies. This variability reflects fluctuations relating to the NAO for both sites of the sub‐tropical gyre, with the Eastern part showing a closer correlation with a 3‐year NAO delay. The response to interannual variations in the meteorological forcing to the extra‐tropical carbon cycle can be predicted to clarify effects on future climate change.
Bibliography:	ark:/67375/WNG-9L5LQCN2-0 istex:10606E2567F104873B79521C1CB1FE9D01AD39A7 ArticleID:2006GL028145 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0094-8276 1944-8007
DOI:	10.1029/2006GL028145