M3: Toward consistent subgrid momentum closures

Principal investigator: Prof. Marcel Oliver (Jacobs University Bremen), Dr. Sergey Danilov (Alfred Wegener Institute for Polar and Marine Research Bremerhaven)

This project addresses energy backscatter from sub-grid scale motion, both theoretically and in the context of state-of-the-art global ocean circulation models at “eddy permitting” or barely eddy resolving resolutions.  We systematically explore remedies by quantifying the energy budget near the grid scale in situations close to geostrophic turbulence, evaluating existing closure schemes, investigating new approaches to minimally dissipative sub-grid closures, and transferring the best approaches to full primitive equation ocean and earth system models.

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