The following sub-grid scale parameterizations generally yield fluxes that act in the lateral direction.
Laplacian and bi-harmonic viscosities with linear and Smagorinsky options are implemented in MOM_hor_visc.
Gent-McWilliams/TEM/isopycnal height diffusion¶
Lagrangian mean eddy mass transport is parameterized following , in MOM_thickness_diffuse.
The diffusivity coefficients are calculated in MOM_lateral_mixing_coeffs and MOM_thickness_diffuse and includes constants and the  scaling.
A parameterization of the upscale unresolved cascade utilizes MOM_MEKE and negative Laplacian viscosity in MOM_hor_visc.
Mixed layer restratification by sub-mesoscale eddies¶
See Horizontal Diffusion.
Astronomical tidal forcings and self-attraction and loading are implement in MOM_tidal_forcing. Tides can also be added via an open boundary tidal specification, see [OBC wiki page](https://github.com/NOAA-GFDL/MOM6-examples/wiki/Open-Boundary-Conditions).