[MITgcm-support] MITgcm diffusivities?

[Stephanie Downes]

And, just to check, there's no Simmons-type tidal mixing component to  
the vertical diffusivity, it's just Bran-Lewis, correct?


On Dec 10, 2009, at 1:42 PM, Matthew Mazloff wrote:

> Hi Stephanie,
>
> Yes, these are at all depths.  And they are likely based on some  
> hand-wavy scaling arguments and effective diffusivity calculations.   
> As I'm sure you know, there are many processes a 1^o model does not  
> resolve (e.g. internal waves) -- parameterizations are needed.  It's  
> not obvious how to choose parameterization coefficients....
>
> -Matt
>
>
>
>
> On Dec 10, 2009, at 10:26 AM, Stephanie Downes wrote:
>
>> Great- thanks.
>>
>> I'm surprised thought at there being a constant vertical  
>> diffusivity applied over the whole ocean- and is this at all depths  
>> too?
>>
>> Stephanie
>>
>>
>> On Dec 10, 2009, at 1:07 PM, Matthew Mazloff wrote:
>>
>>> Hi Stephanie,
>>>
>>> Its table 3 of the paper:
>>> G. Forget, in press: Mapping ocean observations in a dynamical  
>>> framework: a 2004-2006 ocean atlas. J. Phys. Oceanogr.
>>>
>>>
>>> -Matt
>>>
>>> <occa_table3.jpg>
>>>
>>> On Dec 10, 2009, at 9:59 AM, Stephanie Downes wrote:
>>>
>>>> Hi MITgcm support folk,
>>>>
>>>> Can you tell me where I can find the coefficients for background  
>>>> vertical diffusivity, along-isopycnal mixing (Aredi and A_GM) for  
>>>> the MITgcm/OCCA model?
>>>>
>>>> Thanks,
>>>>
>>>> Stephanie
>>>>
>>>>
>>>>
>>>>
>>>>
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>>
>> Stephanie Downes
>> Princeton University
>> AOS Program
>> 300 Forrestal Road, Sayre Hall
>> Princeton NJ 08544
>> P: +1-609-258-1131
>> C: +1-609-651-6647
>> E: sdownes at princeton.edu
>> W: http://www.princeton.edu/aos/people/research_staff/downes/
>>
>>
>>
>>
>>
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>
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Stephanie Downes
Princeton University
AOS Program
300 Forrestal Road, Sayre Hall
Princeton NJ 08544
P: +1-609-258-1131
C: +1-609-651-6647
E: sdownes at princeton.edu
W: http://www.princeton.edu/aos/people/research_staff/downes/





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