FN Archimer Export Format
PT J
TI Development of a two-way-coupled ocean–wave model: assessment on a global NEMO(v3.6)–WW3(v6.02) coupled configuration
BT 
AF Couvelard, Xavier
   Lemarié, Florian
   Samson, Guillaume
   Redelsperger, Jean-Luc
   ARDHUIN, Fabrice
   Benshila, Rachid
   Madec, Gurvan
AS 1:;2:;3:;4:;5:;6:;7:;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Univ. Brest, CNRS, IRD, Ifremer, Laboratoire d'Océanographie Physique et Spatiale (LOPS), IUEM, Brest, France
   Univ. Grenoble Alpes, Inria, CNRS, Grenoble INP, LJK, 38000 Grenoble, France
   Mercator Océan, Toulouse, France
   LEGOS, University of Toulouse, CNES, CNRS, IRD, UPS, Toulouse, France
   Sorbonne Universités (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, LOCEAN Laboratory, Paris, France
C2 CNRS, FRANCE
   UNIV GRENOBLE ALPES, FRANCE
   MERCATOR OCEAN, FRANCE
   UNIV TOULOUSE, FRANCE
   UNIV SORBONNE, FRANCE
UM LOPS
IN WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-univ-france
IF 1.591
TC 12
UR https://archimer.ifremer.fr/doc/00512/62338/66599.pdf
   https://archimer.ifremer.fr/doc/00512/62338/76104.pdf
LA English
DT Article
AB This paper describes the implementation of a coupling between a three-dimensional ocean general circulation model (NEMO) and a wave model (WW3) to represent the interactions of the upper oceanic flow dynamics with surface waves. The focus is on the impact of such coupling on upper-ocean properties (temperature and currents) and mixed-layer depths (MLD) at global eddying scales. A generic coupling interface has been developed and the NEMO governing equations and boundary conditions have been adapted to include wave-induced terms following the approach of McWilliams et al. (2004) and Ardhuin et al. (2008). In particular, the contributions of Stokes-Coriolis, Vortex and surface pressure forces have been implemented on top of the necessary modifications of the tracer/continuity equation and turbulent closure scheme (a 1-equation TKE closure here). To assess the new developments, we perform a set of sensitivity experiments with a global oceanic configuration at 1/4° resolution coupled with a wave model configured at 1/2° resolution. Numerical simulations show a global increase of wind-stress due to the interaction with waves (via the Charnock coefficient) particularly at high latitudes. The modifications brought to the TKE closure scheme and the inclusion of a parameterization for Langmuir turbulence lead to a significant increase of the mixing thus helping to deepen the MLD. This deepening is mainly located in the Southern Hemisphere and results in reduced sea-surface currents and temperatures. 
PY 2020
PD JUN
SO Geoscientific Model Development
SN 1991-959X
PU Copernicus GmbH
VL 13
IS 7
UT 000550694000001
BP 3067
EP 3090
DI 10.5194/gmd-13-3067-2020
ID 62338
ER

EF