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Constant GM Coefficient

jskenigson

Jessica S Kenigson
New Member
I am attempting to configure MOM6 to use a constant GM diffusivity coefficient K and I have set the following parameters:

USE_MEKE=False
USE_KH_IN_MEKE=False
RESOLN_SCALED_KHTH = False
DEPTH_SCALED_KHTH=False
KHTH_SLOPE_CFF = 0.00
USE_VARIABLE_MIXING = False
KHTH=800.00

I believe that the GM coefficient in the output file is "diftrblo", and yet this coefficient is still spatially varying. Have I overlooked some parameters here? Thank you very much for any advice.
 

adcroft

Alistair Adcroft
Member
What does the structure look like - a function of latitude, baroclinicity, noise? Maybe add KHTH_USE_EBT_STRUCT=False . If you look at KHTH_u1, that diagnoses the the nominal 2d KHTH at u-points before any vertical functions are applied. There's a CFL limit applied also - if the structure looks like the grid spacing, then the time-step the diffusivity is being limited.
 
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