[MITgcm-support] viscAh & viscAz!

[Baylor Fox-Kemper]

Oops,
   The memory fails, and I grepped without -i.
   It seems I did do viscc4leithd as well as viscc2leithd.
   I just didn't do viscc4smag!
   Cheers,

     -Baylor


On Jul 7, 2005, at 8:03 PM, Dimitris Menemenlis wrote:

>> There's a viscC4leith that is a biharmonic leith scheme.  There is,
>> at this moment anyway, no viscc4leithd divergent correction.... 
>> -Baylor
>
> Baylor, your message above worries me.  For high-res integrations I use
>
>  useFullLeith=.TRUE.
>  viscC4Leith=1.0,
>  viscC4Leithd=1.0,
>  useAnisotropicViscAGridMax=.TRUE.
>
> What do you mean there is no viscc4leithd divergent correction?
> In mom_vi_hdissip.F there are terms of form:
>
>    Alth4=sqrt(viscC4leith**2*grdVrt+viscC4leithD**2*grdDiv)*L5
>
> Aren't these supposed to be the divergent corrections or is there a 
> problem?  Why do you reccomend to switch to harmonic viscosity?
>
> Dimitris
>
> -- 
> Dimitris Menemenlis <menemenlis at jpl.nasa.gov>
> Jet Propulsion Lab, California Institute of Technology
> MS 300-323, 4800 Oak Grove Dr, Pasadena CA 91109-8099
> tel: 818-354-1656;  fax: 818-393-6720
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