| Abstract: |
| Turbulent mesoscale (10-100km) eddies are crucial for maintaining the ocean circulation and its energy cycle. The sub-grid scale eddy variability needs to be parametrized in ocean models, even as the resolution of the model increases. I will present some recent advances we have made in representing turbulent eddy fluxes using a non-Newtonian stress. The non-Newtonian stress depends on the partially resolved scales and their variability and is shown to be a good parametrization of ocean turbulence by enhancing the kinetic energy inverse cascade. The parametrization possesses attractive features for implementation in global models: little computational cost, flow- and scale-awareness, and a dependence on the life cycle of mesoscale turbulence. |
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