[Mitgcm-support] Re: problems with periodic boundary conditions?

[mitgcm-support at dev.mitgcm.org]

Thanks,

how embarrassing (but at least I did use cartesian grid)!

Martin

support at mitgcm.org wrote:
> Did you turn off beta (variations in f) when you switched to doubly
> periodic?
> 
> A.
> 
> 
>>-----Original Message-----
>>From: Martin Losch [mailto:mlosch at awi-bremerhaven.de]
>>Sent: Wednesday, May 07, 2003 11:03 AM
>>To: support at mitgcm.org
>>Subject: problems with periodic boundary conditions?
>>
>>
>>Hi,
>>
>>I have set up a zonally periodic channel, in which I want to create
>>instabilities. I use the linear implicit free surface. In 
>>order to avoid 
>>boundary effects, I have tried a run in which I removed the 
>>northern and 
>>southern wall as well: double periodic domain. But now the mean sea 
>>surface (dynstat_eta_mean) fluctuates with an amplitude of 40m (5000m 
>>total water depth). Also the tracers are no longer conserved. 
>>Has anyone seen this behavior before? What is going on?
>>
>>Martin
>>
>>--
>>Martin Losch
>>Alfred Wegener Institute for Polar and Marine Research
>>Postfach 120161, 27515 Bremerhaven, Germany;
>>Tel./Fax: ++49(0471)4831-1872/1797
>>
>>
> 
> 


-- 
Martin Losch
Alfred Wegener Institute for Polar and Marine Research
Postfach 120161, 27515 Bremerhaven, Germany;
Tel./Fax: ++49(0471)4831-1872/1797