Regional differences in modelled net production and shallow remineralization in the North Atlantic subtropical gyre


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dc.contributor.author Fernandez-Castro, B.
dc.contributor.author Anderson, Laurence A.
dc.contributor.author Maranon, E.
dc.contributor.author Neuer, Susanne
dc.contributor.author Ausiin, B.
dc.contributor.author Gonzalez-Davila, M.
dc.contributor.author Santana-Casiano, J. M.
dc.contributor.author Cianca, Andrés
dc.contributor.author Santana, R.
dc.contributor.author Llinas, Octavio
dc.contributor.author Rueda, María José
dc.contributor.author Mourino-Carballido, Beatriz
dc.date.accessioned 2012-10-12T19:22:25Z
dc.date.available 2012-10-12T19:22:25Z
dc.date.issued 2012-08-01
dc.identifier.citation Biogeosciences 9 (2012): 2831-2846 en_US
dc.identifier.uri http://hdl.handle.net/1912/5447
dc.description © The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 9 (2012): 2831-2846, doi:10.5194/bg-9-2831-2012. en_US
dc.description.abstract We used 5-yr concomitant data of tracer distribution from the BATS (Bermuda Time-series Study) and ESTOC (European Station for Time-Series in the Ocean, Canary Islands) sites to build a 1-D tracer model conservation including horizontal advection, and then compute net production and shallow remineralization rates for both sites. Our main goal was to verify if differences in these rates are consistent with the lower export rates of particulate organic carbon observed at ESTOC. Net production rates computed below the mixed layer to 110 m from April to December for oxygen, dissolved inorganic carbon and nitrate at BATS (1.34±0.79 mol O2 m−2, −1.73±0.52 mol C m−2 and −125±36 mmol N m−2) were slightly higher for oxygen and carbon compared to ESTOC (1.03±0.62 mol O2 m−2, −1.42±0.30 mol C m−2 and −213±56 mmol N m−2), although the differences were not statistically significant. Shallow remineralization rates between 110 and 250 m computed at ESTOC (−3.9±1.0 mol O2 m−2, 1.53±0.43 mol C m−2 and 38±155 mmol N m−2) were statistically higher for oxygen compared to BATS (−1.81±0.37 mol O2 m−2, 1.52±0.30 mol C m−2 and 147±43 mmol N m−2). The lateral advective flux divergence of tracers, which was more significant at ESTOC, was responsible for the differences in estimated oxygen remineralization rates between both stations. According to these results, the differences in net production and shallow remineralization cannot fully explain the differences in the flux of sinking organic matter observed between both stations, suggesting an additional consumption of non-sinking organic matter at ESTOC. en_US
dc.description.sponsorship B. Mourino was supported by the Ramon y Cajal program from the Spanish Minister of Science and Technology. Funding for this study was provided by the Xunta de Galicia under the research project VARITROP (09MDS001312PR, PI B. Mourino) and by the Ministerio de Ciencia e Innovation MOMAC project (CTM2008-05914/MAR). en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Copernicus Publications on behalf of the European Geosciences Union en_US
dc.relation.uri http://dx.doi.org/10.5194/bg-9-2831-2012
dc.rights.uri http://creativecommons.org/licenses/by/3.0/ *
dc.title Regional differences in modelled net production and shallow remineralization in the North Atlantic subtropical gyre en_US
dc.type Article en_US
dc.identifier.doi 10.5194/bg-9-2831-2012

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