[MITgcm-devel] Paluszkiewicz plume model parameterization

[chris hill]

oops - sorry I thought you'd only done pacanowski and philander stuff!

Chris
Martin Losch wrote:
> Hi Dimitris,
> 
> I implemented that scheme. The package is called OPPS and in  
> verification/vermix you'll find an example how to use it in a very  
> simple (2D) configuration.
> 
> HOWEVER:
> 1. I just plugged in the "original" routine, that Ralph (the  Timmermann 
> from the paper that Chris attached) gave to me. He got is  from 
> Paluszkiewicz, but I couldn't reach her, I guess she left  science and 
> is now in science administration? NFS? NOPP?
> 2. The routine is full of conditional goto's and jumps and is very  
> difficult to read. I was on my list to clean that up, but I haven't  got 
> around to it
> 3. You cannot use OPPS together with any other mixing scheme, just as  
> convective adjustment for which it is supposed to be a replacement.  
> Maybe that should be changed.
> 4. Have a look at Ralph's paper: OPPS by itself is terrible because  it 
> doesn't do anything about wind stirring (just buoyancy driven  convection)
> 5. It is one of my ongoing projects to systematically compare all  
> mixing/convection schemes under controlled conditions  
> (opps,kpp,my82,pp81,ggl90,implicit diffusion,convective adjustment,  
> basically a follow up on Ralph's paper which suffers from the very  
> specific application: They used a tuned model and the result is that  
> the scheme that they used during tuning is the best, not very  
> convincing. However, the main point seems to be more general: in ice- 
> covered regions wind stirring is generally underestimated by the  
> conventional schemes, including kpp I have to say, so that summer  
> mixing layers are too shallow (top layer) and consequently surface  
> temperatures are to high), that's why I implemented them almost 2  years 
> ago.
> 
> Martin
> 
> 
> On Feb 10, 2006, at 6:33 AM, chris hill wrote:
> 
>> Not that I know of.
>>
>> Chris
>>
>> PS the attached paper has some interesting discussions on  convection 
>> in the southern ocean.
>> Dimitris Menemenlis wrote:
>>
>>> Has anyone implemented Paluszkiewicz plume model parameterization  in 
>>> MITgcm.  It is supposed to have big positive impact on  unrealistic 
>>> winter time open-water convection that we see around  Antarctica in 
>>> hi-res model simulations.  Dimitris
>>
>>
>> <timmerman_beckman.pdf>
>> _______________________________________________
>> MITgcm-devel mailing list
>> MITgcm-devel at mitgcm.org
>> http://mitgcm.org/mailman/listinfo/mitgcm-devel
> 
> 
> _______________________________________________
> MITgcm-devel mailing list
> MITgcm-devel at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-devel
>