[MITgcm-support] Unexpected noise with RBCS

[Matthew Mazloff]

What is your cfl? You may need to reduce your timestep. 
If you prefer not reducing your timestep you could likely increase your diffusivity or viscosity. 

(Another possibility is that your restoring timescale is too short, but this seems to be showing up even outside the box.)
 
Matt



> On Sep 2, 2021, at 1:54 PM, Peng Zhan <peng.zhan at kaust.edu.sa> wrote:
> 
> Hi all,
> 
> I am running an experiment with rbcs for temperature.
> 
> As shown in the following figure a snapshot of the difference between the rbcs run and the free run, while the region to be relaxed can be specified by the relaxMaskFile (roughly the box area), some unexpected noise appears randomly across the domain. 
> 
> Any hint to get out of it is highly appreciated!
> Thanks in advance, Peng
> <Screen Shot 2021-09-02 at 11.51.13 PM.png>
> 
> This message and its contents, including attachments are intended solely for the original recipient. If you are not the intended recipient or have received this message in error, please notify me immediately and delete this message from your computer system. Any unauthorized use or distribution is prohibited. Please consider the environment before printing this email._______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.mitgcm.org_mailman_listinfo_mitgcm-2Dsupport&d=DwICAg&c=-35OiAkTchMrZOngvJPOeA&r=HSHS34ROdfL7f2oVxuKB761hrMvWN1RWA5k3SHGts_s&m=NAU_-idm9JygX7wogiZYnJeDD1wrbJzz-4jC07j4F4c&s=o7wQbUVObU6gtbki11ZV8aVUJts_zjvGRwrMIDQi1ZU&e= 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.mitgcm.org/pipermail/mitgcm-support/attachments/20210902/402a3196/attachment.html>