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Horizontal Velocity at the Bottom

ezaron

Ed Zaron
New Member
What version of the code are you using?
I'm using a recently checked-out branch, dev/gfdl, from GitHub - NOAA-GFDL/MOM6-examples: Example configurations for MOM6 and SIS2

Question:
What is the recommended method for computing and outputting the horizontal bottom current vector from MOM6?

I have looked through the diagnostics code and available_diagnostics file, and I don't see built-in method for outputting the bottom or near-bottom horizontal current vector.

I looked in the restart file, and it seems that the deepest layers have zero horizontal currents over much of the ocean (I am using ALE with 41 HYCOM-hybrid layers).

I tried to follow the code that computes taux_bot and tauy_bot. These seem to be computed from u(i,j,nz),v(i,j,nz) times a friction coefficient, but since the bottom velocity appears to be zero, I assume there are details here I don't understand, possibly related to the barotropic/baroclinic split.

-Ed
 
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