Using a resolution function to regulate parameterizations of oceanic mesoscale eddy effects

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Applications of Deep Learning to Ocean Data Inference and Subgrid Parameterization (2018, background): “However, high-resolution models are computationally expensive, and the current resolution of models is not high enough to fully resolve the first baroclinic deformation radius at midlatitudes (Hallberg, 2013).”
Southern Ocean eddy phenomenology (2015, background): “This notion is supported by the very small Rossby deformation radius over Southern Ocean bathymetrical plateaus of less than 10 km [see e.g., Venaille et al., 2011; Hallberg, 2013], which would favor the existence of small mesoscale eddies.”
The GFDL Global Ocean and Sea Ice Model OM4.0: Model Description and Simulation Features (2019, methodology): “The Laplacian viscosity is scaled to 529 zero wherever the first baroclinic deformation is resolved, namely in the tropics, using the 530 resolution function of [Hallberg, 2013].”