[MITgcm-support] conservation of eta

[Jean-Michel Campin]

Hi Samar,

On Wed, Oct 19, 2005 at 11:11:56AM -0400, Samar Khatiwala wrote:
> Hello
> 
> I have a question regarding volume conservation.
> 
> I have exactConserv=.FALSE. and NO freshwater forcing. (In fact, no  
> salinity
> in the problem.)
> 

exactConserv is shortly described (from STDOUT.00*) as:
(PID.TID 0000.0001) exactConserv =   /* Exact Volume Conservation on/off flag*/
So, if you worry about volume conservation, the 1rst thing I would
recommend is to turn it on. And we will see if the problem persists or not.

> Starting from rest, I integrate the model. I would have expected that  
> the surface
> integral of Eta, i.e., sum(sum(RAC.*Eta)), should stay zero for all  
> time. This
> should happen even when exactConserv=F.
> But that is not borne out by experience. Can someone please explain  
> what I'm missing
> here?
> 
> Thanks, Samar
> 
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