[MITgcm-support] Re: MITgcm-support Digest, Vol 74, Issue 10

[Martin Losch]

Marcello,

you are right, there are no vertically integrated "barotropic"  
velocities variables (as for example in MOM) in the MITgcm.
Again, once you need them I could make my Stevens-like BC available,  
where you can prescribe a vertically averaged velocity (and  
hydrography) and the rest is estimated from the model state. I think  
that's what you have in mind. The code works very well for me, but it  
is not yet very general (and North/South code is completely missing).  
In particular they reduce the problem with the standard MITgcm OBC's  
that you can often get very large vertical velocities just inside the  
open boundaries, because the prescribe U/V/T/S are not required be  
dynamically consistent with small or zero vertical velocities  
(alhtough you could try to compute such values offline before  
prescribing them).

Martin

On Aug 11, 2009, at 8:14 PM, Marcello Gatimu Magaldi wrote:

> Dear Martin,
>
> first of all thank you for your reply and attention.
> I will give you feedback as soon as possible.
> At the moment I am more studying how the model works.
> For example, having the possibility to read eta from a file is  
> important.
> However, I would like to combine this information with an obc on the
> vertically averaged barotropic velocities (as is done on flather or
> characteristic method). At the moment I am trying to understand if  
> this
> is possible since mitgcm does not seem to have bc for such velocities.
> Am I wrong (as usual)?
> Thanks again,
> m.