[MITgcm-support] Advection Scheme for Momentum

[Martin Losch]

Bertrand,

momentum advection does not have any of these options. As far as I know (but others may know more), for the flux form version, there’s only 2nd-order central differences. For the vectorInvariant form there is some choice related to the vorticity, unfortunately undocumented <https://mitgcm.readthedocs.io/en/latest/algorithm/algorithm.html#vector-invariant-momentum-equations>
This is what model/inc/PARAMS.h says:
C     upwindVorticity :: bias interpolation of vorticity in the Coriolis term
C     highOrderVorticity :: use 3rd/4th order interp. of vorticity (V.I., advection)

M.


> On 8. Oct 2020, at 17:10, Bertrand Delorme <bdelorme at stanford.edu> wrote:
> 
> Dears,
>  
> I can’t find how to choose the horizontal and vertical advection schemes for momentum from the data file. For the temperature and salinity equations, I select those with tempAdvScheme, tempVertAdvScheme, saltAdvScheme and saltVertAdvScheme. Are there similar options for momentum?
>  
> Thank you,
>  
> Bertrand Delorme
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