[MITgcm-support] periodic channel

[Jean-Michel Campin]

Hi Yuan,

What I generally understand by "periodic boundary condition in longitude"
is: what leave (tracer or momentum) the domain at the eastern boundary 
reenter at the western boundary ; and what leave at the western boundary
reenter at the eastern boundary. So that it appears as a periodic domain.
This works with MITgcm for any domain size in longitude (does not need 
to be 360.degrees wide) with both cartesian and lat-long grids.

And the example that was mentioned in this response (In Jully 2004:
http://dev.mitgcm.org/pipermail/mitgcm-support/2004-July/002322.html
), the verification/aim.5l_Equatorial_Channel, is an atmospheric case
with periodic boundary condition in the longitude direction.

Hope this answer your question.

Jean-Michel

On Thu, Feb 24, 2005 at 02:45:43AM -0700, Yuan Lian wrote:
> Hi, Jean-Michel,
> 
> The problem I have here is to do periodic boundary condition in longitude,
> for example, how to set up a calculation domain from 0E to 120E. If I can
> set up a domain like this, it will save a lot of simulation time.
> 
> Is it possible to do a configuration like this in atmospheric model?
> Thanks much!
> 
> -Yuan
>