Effects of mesoscale eddy/wind interactions on biological new production and eddy kinetic energy.

Eden, Carsten and Dietze, Heiner (2009) Effects of mesoscale eddy/wind interactions on biological new production and eddy kinetic energy. Open Access Journal of Geophysical Research: Oceans, 114 . C05023. DOI 10.1029/2008JC005129.

843_Eden_2009_EffectsOfMesoscaleEddywindInteractions_Artzeit_pubid12557.pdf - Published Version

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Accounting for ocean currents in the bulk parameterization of the wind stress might represent a physically more plausible way to force an ocean model than ignoring their effect. We show in this study that using the air-sea velocity difference instead of the atmospheric wind in the wind stress formulation dampens both the near-surface eddy activity and the biotic carbon assimilation in a high-resolution model of the North Atlantic. The former is significant, corresponding to a reduction down to 50% in the tropical Atlantic, while in higher latitudes (in agreement with previous results) the reduction of eddy activity is only around 10%. The effect on biotically mediated new production and air-sea carbon fluxes is, on the other hand, minor. New production is reduced by less than 5% on a basin average, while simulated air-sea CO2 fluxes are barely affected at all. The model results imply that eddy/wind interaction introduced by accounting for ocean currents in the wind stress formulation does not drive any additional (and hitherto unaccounted) nutrient fluxes to the sunlit surface of the subtropical gyre, as was recently proposed in the literature.

Document Type: Article
Keywords: Oceanography; Biogeochemistry; north-atlantic ocean; circulation models nitrate flux mixed-layer sea phytoplankton variability resolution impact wind
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > SFB 754
OceanRep > SFB 754 > A1
OceanRep > SFB 754 > A2
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2008JC005129
ISSN: 2169-9275
Projects: SFB754, Future Ocean
Date Deposited: 26 Nov 2009 12:58
Last Modified: 23 Sep 2019 17:20
URI: http://oceanrep.geomar.de/id/eprint/552

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