[MITgcm-support] EVP stability

[Patrick Heimbach]

Matt,

turning off dynamics for the time being in the Southern Ocean
is a reasonable choice, at least based on 1 deg. tests
(I have figures of daily sea-ice concentration misfits
for various configs, including B-grid LSR, C-grid LSR, C-grid EVP,  
and TD only).
Quite possibly this will not be the biggest error related
to sea-ice that you'll be dealing with at the moment.

-p.



On Feb 1, 2007, at 10:12 PM, Matthew Mazloff wrote:

> Hi,
>
> Thanks for the advice.  I think I will make a small 1/6 degree  
> resolution test box and try running.  Until then I want to just run  
> without dynamics.  I am now using C-grid.  For ice-covered areas,  
> how is the wind-stress transferred to the ocean if sea-ice dynamics  
> are off.  Will there be no wind-stress...or will it go right  
> through?  Do I have any options?
>
> Thanks,
> Matt
>
>
> On Feb 1, 2007, at 9:29 PM, Dimitris Menemenlis wrote:
>
>> Matt, I don't know what to say beyond Jinlun's suggestion.  If you  
>> tried a 1s time step and if it blew up right away, you would know  
>> that something else is wrong.  It is a big domain to be trying all  
>> these experiments blindly.
>>
>> Maybe what you should do for time being, if you don't want to  
>> experiment, is to go back to B-grid with LSR and with no ice-to- 
>> ocean connection.  That configuration worked on the 1/8th and on  
>> the 1/16th-degree global grids.
>>
>> D.
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---
Dr Patrick Heimbach | heimbach at mit.edu | http://www.mit.edu/~heimbach
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