[MITgcm-devel] Re: [MITgcm-cvs] MITgcm/pkg/seaice CVS Commit

[Dimitris Menemenlis]

Martin, I do nothing about ice velocities (ash on my head!) except for imposing a closed boundary condition at the southern and western open boundaries of the domain.  That is, ice velocities are set to zero at the south-western open boundaries.  This is not ideal, of course, but in tests that Michael and I have run, if you are some two to three grid points away from the edge, then the results are pretty similar to the global solution (except for salinity and snow, which is what Michael added yesterday - he did pretty good considering this is his first forray into the MITgcm innards).  Michael is running a Weddell Sea configuration.  In the closed boundary set up, ice accumulated in the Northeastern edges of the domain and remained there year round, becoming thicker and thicker every year.  With the current limited scheme, ice is transported out of the domain of integration and the ice condition looks very reasonable.  D.

Dimitris Menemenlis
cell: 818-625-6498

-----Original Message-----

From:  Martin Losch <Martin.Losch at awi.de>
Subj:  [MITgcm-devel] Re: [MITgcm-cvs] MITgcm/pkg/seaice CVS Commit
Date:  Tue Oct 23, 2007 1:51 am
Size:  982 bytes
To:  MITgcm-devel at mitgcm.org

Hi Dimitris,

I am thrilled. What do you do about the ice velocities? Do you  
prescribe them, do you set them to zero, do you extrapolate them?
I am wondering what's most sensible guess:
if you have outflow, you'd like to have the ice move out, so duice/dx  
= 0. If you have inflow, you'd probably don't want ice to enter, so  
uice=0. right?
Martin

On 23 Oct 2007, at 10:25, Dimitris Menemenlis wrote:

> Update of /u/gcmpack/MITgcm/pkg/seaice
> In directory forge:/tmp/cvs-serv12792/pkg/seaice
>
> Modified Files:
> 	seaice_advdiff.F seaice_advection.F
> Log Message:
> added open boundary conditions capability for seaice HSNOW and HSALT
> (code contributed by Michael Schodlok)
>
> _______________________________________________
> MITgcm-cvs mailing list
> MITgcm-cvs at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-cvs

_______________________________________________
MITgcm-devel mailing list
MITgcm-devel at mitgcm.org
http://mitgcm.org/mailman/listinfo/mitgcm-devel