Open minghangli-uni opened 4 months ago
All the parameters were inherited from the CESM GMOM_JRA configuration this was based on, so I don't know the reasons for these choices. We should feel free to modify these.
Our other MOM6 configurations use Smagorinsky biharmonic (smagorinsky_ah
) rather than Leith biharmonic (leith_ah
) - see this table. ACCESS-OM2 used isotropic biharmonic Smagorinsky - see section 3.2.5 of the tech report.
For details see the mom_hor_visc module reference.
According the GFDL OM4 paper only their 0.5° config used Laplacian Leith (SMAGORINSKY_KH
) in addition to biharmonic Leith.
Note, this was discussed in a meeting with notes here: https://forum.access-hive.org.au/t/namelist-configuration-discussion-meeting/1917
In the 1deg setup of MOM6, Leith nonlinear eddy viscosity was employed instead of the Smagorinsky eddy viscosity used in MOM5. Any reasons behind why this decision was made? The relevant Leith parameters are listed below,
Parameters associated with Smagorinsky eddy viscosity are provided for reference, with the reference given in paper The GFDL Global Ocean and Sea Ice Model OM4.0: Model Description and Simulation Features,