sponge layer and diffusive advection schemes

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xavierC
Posts: 10
Joined: Thu Jul 16, 2009 5:17 pm
Location: Madeira University

sponge layer and diffusive advection schemes

#1 Post by xavierC » Fri Apr 12, 2019 8:47 am

Hi,
I am a bit lost with the use of the sponge layer through visc_factor in the grid file.
Basically it modifies visc4 variable. But since i am using diffusive advection scheme i do not understand which values are in visc4 (which should be 0).
Any one could give me any insight about proper sponge setup?
Thanks
Xavier

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kate
Posts: 3682
Joined: Wed Jul 02, 2003 5:29 pm
Location: IMS/UAF, USA

Re: sponge layer and diffusive advection schemes

#2 Post by kate » Fri Apr 12, 2019 5:52 pm

I don't use the ROMS sponge feature. When the MOM6 people talk about sponges, they instead mean a nudging to a climatology around the edges of the domain. I do this kind of sponging instead.

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