[MITgcm-support] Regional high-res model configuration

[Stanislav Martyanov]

Hello, Jody!

>> when the Richardson number goes to less than 1/4, the diffusivity
>> and viscoisity goes to infinity, or more practically, to a capping value
Yes, and that is why I was wondered that GGL90 may need additional
convection...

>>You may also look at KL10 for these scales
I have, and we are planning to use it for the Kara Sea when the general
part of the model's configuring is over. The thing I am interesting in is
the river plumes entering the Kara Sea and generating strong stratification.

Regards,
Stanislav

вт, 21 апр. 2020 г. в 17:55, Jody Klymak <jklymak at uvic.ca>:

>
> 4) The MY82 package does not allow using the convective adjustment
> (cAdjFreq) and ivdc_kappa. Does it mean that the MY in MITgcm works fine
> with vertical instability cases? Actually, it should, as follows from J.
> Mellor's papers, but this question arose when I was investigating the GGL90
> code, where I found the line "convective adjustment might be needed even
> with ggl90"…
>
> Why do you want to use the MY82 package? I’d prefer GGL90 or KPP (although
> at your resolution, KPP might be noisy (see this thread <
> http://mailman.mitgcm.org/pipermail/mitgcm-support/2020-April/012427.html
> >).
> You can just comment out the stop-statement in the code and use MY82 with
> other convective adjustment, but it should (like GGL90) remove the
> instabilities, because it’s also Richardson number based. MY82 is not
> really used that much (at all?).
>
>
> Right, when the Richardson number goes to less than 1/4, the diffusivity
> and viscoisity goes to infinity, or more practically, to a capping value.
>
> You may also look at KL10 for these scales, which only puts dissipation
> into overturns, but tries to do so in an energetically consistent way.
>
> Cheers,   Jody
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