[MITgcm-support] momentum dissipation at the surface

[Georgy Manucharyan]

Thanks for the advice, Martin.
I have a follow up question. The fix with increased vertical viscosity 
would work for me if I would be able to set-up velocity in the top layer 
to be zero. Do you know in which file should I set it to zero? 
Alternatively, is there a way if prescribing a restoring term for the 
surface velocity in order to dissipate it with a certain time scale?
Thanks in advance for your help,
Georgy

mitgcm-support-request at mitgcm.org wrote:
> Message: 3
> Date: Thu, 19 Jan 2012 09:31:32 +0100
> From: Martin Losch <Martin.Losch at awi.de>
> To: mitgcm-support at mitgcm.org
> Subject: Re: [MITgcm-support] momentum dissipation at the surface
> Message-ID: <FF388ED1-4466-4F88-8D80-29D08094710C at awi.de>
> Content-Type: text/plain; CHARSET=US-ASCII
>
> Gregory,
> there is a parameter (array) viscArNr(1:Nr) (and diffKrNrT/S) to be specified in data &PARM01 for vertical viscosity.
>
> I do not know of a way of prescribing horizontal viscosity as a function of depth (k-index).
> As a hack I suggest including some scaling factor in pkg/mom_common/mom_calc_visc.F
>
> Martin
>
> On Jan 18, 2012, at 11:40 PM, Georgy Manucharyan wrote:
>
>   
>> Hello,
>> Is there a way of prescribing increased momentum dissipation of at the surface of the ocean? In other words, could I increase the horizontal and vertical viscosity in upper few layers of the ocean?
>> Thank you for your help,
>> Georgy
>>
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