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 Journal of Geophysical Research - Oceans, 114 . C05023. DOI 10.1029/2008JC005129.

[img]
Preview
Text
843_Eden_2009_EffectsOfMesoscaleEddywindInteractions_Artzeit_pubid12557.pdf - Published Version

Download (1178Kb)

Supplementary data:

Abstract

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
DOI etc.: 10.1029/2008JC005129
ISSN: 0148-0227
Projects: SFB754, Future Ocean
Date Deposited: 26 Nov 2009 12:58
Last Modified: 06 Jul 2012 14:54
URI: http://eprints.uni-kiel.de/id/eprint/552

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...