Search found 5 matches

by dlebars
Mon Aug 26, 2019 9:20 am
Forum: ROMS Discussion
Topic: About how to apply artificial time-dependent VISC2
Replies: 1
Views: 174

Re: About how to apply artificial time-dependent VISC2

Hi. This might not be a satisfying answer but I would solve this problem in a simple way. I would not modify the code. That is taking the risk of including bugs and it makes it difficult to move to newer code version in the future. I would instead make a bash or python script that runs the model for...
by dlebars
Wed Dec 09, 2015 4:17 pm
Forum: ROMS Problems
Topic: Checkerboard instability
Replies: 7
Views: 3419

Re: Checkerboard instability

The problem is solved! It was indeed NDTFAST, I sought it was the barotropic time step in seconds so I was decreasing it to remove the instability which made things worse.
Thank you for your help!
by dlebars
Tue Dec 08, 2015 4:15 pm
Forum: ROMS Problems
Topic: Checkerboard instability
Replies: 7
Views: 3419

Re: Checkerboard instability

Using GLS vertical mixing parameterization with standard k-epsilon implementation and N2S2_HORAVG does not remove the instability.
by dlebars
Tue Dec 08, 2015 3:38 pm
Forum: ROMS Problems
Topic: Checkerboard instability
Replies: 7
Views: 3419

Re: Checkerboard instability

Dear jcwarner,

For the moment I am using LMD_MIXING so from what I understand N2S2_HORAVG is not used in this case.
But I am going to try GLS_MIXING with N2S2_HORAVG maybe it solves my issue.

Thanks for the tip,
Dewi
by dlebars
Tue Dec 08, 2015 2:10 pm
Forum: ROMS Problems
Topic: Checkerboard instability
Replies: 7
Views: 3419

Checkerboard instability

Dear all, I should be doing something wrong but I can't find out so any help is welcome. I develop a 3D ROMS (version 3.7) configuration of the european coast forced with ERA-interim fields and bulk formula with horizontal resolution of 20km and 30 vertical layers. I get what looks like a checkerboa...