[MITgcm-support] rbcs and obcs

[Dustin Carroll]

Hi Jody,

Saw your post on the MITgcm-support. I’ve been trying to force velocities using RBCS but still haven't gotten it to work properly. T/S relaxes fine. 

Have you done this before? — if so do you have a working data.rbcs that you could share? 

Cheers and thanks,
Dustin

On Feb 14, 2014, at 1:18 PM, Jody Klymak <jklymak at uvic.ca> wrote:

> 
> Hi all,
> 
> I'd like to use rbcs instead of obcs to force internal wave problems, largely because rbcs will allow me to specify a propagating wave inside my sponge, whereas obcs only forces to a single value along the boundary (which can be extended into the interior in a sponge, but not as a propagating wave).
> 
> However, I'm curious what will happen if I specify a velocity u next to my boundary and the boundary (either solid or periodic) has zero velocity.  Will that set up a big divergence in the surface height that will cause barotropic waves? 
> 
> Do I need to specify those boundaries as open and use obcs to make the conditions match the rbcs conditions?  verification/expt4 seems to do this, so I assume thats the case, but thought I'd ask before spending the time to set both up.
> 
> Thanks a lot,  Jody
> 
> 
> --
> Jody Klymak    
> http://web.uvic.ca/~jklymak/
> 
> 
> 
> 
> 
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