[MITgcm-devel] KPP, once again

[chris hill]

Martin,

  Not sure if this is relevant.
  There is a project called GOTM that provides fairly clean 
implementations of a number of turbulence schemes that can be linked as 
a library I believe. No built-in TAF compatibility though. However, if 
you are going to be hacking on the KPP routines in a serious way and 
worrying about turbulent mixing under shelf ice it might be worth 
looking at/googling GOTM.

Chris

Martin Losch wrote:
> I guess, what I have to do is, to tell the subroutines bldepth and blmix 
> in kpp_routines.F that the surface is no longer at k=1 but at k=kTopC. 
> But before I can do that I'll have to spend some time with these 
> routines, and with the gentlement Large, McWilliams and Doney, I suppose 
> (o;
> 
> Martin
> 
> On Sep 19, 2006, at 4:22 PM, Martin Losch wrote:
> 
>> Hi Dimitris,
>>
>> I agree: setting the "surface"-diffusion coefficients to zero is the 
>> minimum I'll have to do (and that does not pose any problem, does 
>> it?). Modifying the surface boundary layer is a little more tricky. So 
>> far, I have managed to make KPP compute a hbl that looks reasonable 
>> (although not correct). For now I should problably turn it off in the 
>> presence of shelfice, but I am just starting to look at that.
>>
>> Thanks for you input.
>>
>> Martin
>>
>> On Sep 19, 2006, at 4:06 PM, Dimitris Menemenlis wrote:
>>
>>> Hi Martin, without having tried it, it seems that replacing nzmax 
>>> with klowc should work but that this would not be sufficient for KPP 
>>> to work with shelfice.  Somehow 1) the surface boundary layer scheme 
>>> would need to be modified or turned off and 2) the mixing 
>>> coefficients evaluated between ktopc and ktopc-1 would need to be set 
>>> to zero to avoid diffusive flux into the ice shelf.  Dimitris
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