Ocean Model SYMPHONIE:

        SYMPHONIE is basically a three-dimensional primitive equation ocean model. The three components of the current, free surface elevation, temperature and salinity are computed on a C grid, using an energy conserving finite difference method (Marsaleix et al, 2008). A generalized vertical coordinate and a curvilinear horizontal coordinate are used. The turbulence closure is achieved through a prognostic equation for the turbulent kinetic energy and a diagnostic equation for the mixing and dissipation length scales. A leap frog scheme is used for the time stepping. Calculus costs are limited thanks to a time splitting technique that permits to compute the vertical shear of the current and its depth-averaged components separately with appropriate time steps. Radiation conditions combined to restoring terms to the large-scale circulation are applied at the open boundaries (Marsaleix et al, 2006).
       A Non-Hydrostatic version of the SYMPHONIE code is now available. A prognostic equation for the vertical momentum has been implemented resulting in the inversion of a classical Poisson equation for the non-hydrostatic component of the pressure.

References:

Marsaleix P., Auclair F., Floor J. W., Herrmann M. J., Estournel C., Pairaud I., Ulses C., 2008. Energy conservation issues in sigma-coordinate free-surface ocean models. Ocean Modelling. 20, 61-89. http://dx.doi.org/10.1016/j.ocemod.2007.07.005

Marsaleix P., Auclair F., Estournel C., 2006, Considerations on Open Boundary Conditions for Regional and Coastal Ocean Models. Journal of Atmospheric and Oceanic Technology, 23,1604-1613, http://dx.doi.org/10.1175/JTECH1930.1


  Development Team:

Patrick Marsaleix: Hydrostatic Boussinesq Equations

Francis Auclair: Non Hydrostatic Module

Caroline Ulses: Ecological Modules

Cyril Nguyen: Solver, Couplers, Parallelization

Claude Estournel: Sediment transport, air-sea flux

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