[MITgcm-support] solid boundary with sponge layer

Jody Klymak jklymak at uvic.ca
Sat Jul 6 13:58:43 EDT 2019

I think you could do either, though I think rbcs might be the most straight forward.  But if you want to use obcs, I think you can just set V=0 at your northern boundary and that will be close to the same thing as a wall.  Note however, that if you have a sponge for temperature I *think* you will get the same one for V.   

Cheers,   Jody

> On Jul 6, 2019, at  6:46 AM, 钱钰坤 <qianyk at mail3.sysu.edu.cn> wrote:
> Hi all,
> I am using a model setup with a solid north boundary so that no mass exchange
> occurs at the north.  This is done using a bathymetry file whose northernmost
> grid points are set to zero (e.g., land points).
> However, I also need a sponge layer so that the temperature could be restored to
> some given profile.  According to the manual, my sponge layer will restore temperature
> to the north boundary condition.
> Now I'm a little confused.  Since my north boundary is masked by the bathy file, does a
> temperature boundary file take some restoring effects in this case?  Or maybe I should
> use the rbcs package?
> ------------------
> Best regards 
> Yu-Kun Qian (钱钰坤) 
> Center for Monsoon and Environment Research
> Department of Atmospheric Sciences
> School of Environmental Science and Engineering 
> Sun Yat-sen University 
> No. 135 Xingang West Road, Haizhu District 
> Guangzhou, 510275, P.R. China 
> Tel; 020-84115227 
> Email: qianyk at mail3.sysu.edu.cn <mailto:qianyk at mail2.sysu.edu.cn>
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> MITgcm-support at mitgcm.org
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