#255 closed Enhancement (fixed)
LIM2 ice-ocean stress instability
| Reported by: | nemo_user | Owned by: | nemo |
|---|---|---|---|
| Priority: | low | Milestone: | |
| Component: | LIM2 | Version: | v2 |
| Severity: | Keywords: | LIM* ice stress v2 | |
| Cc: |
Description
We found that for the global ORCA1 setup (UK) and nemo_2.3, ice-ocean instabilities can develop, likely triggered by convection below the ice. The fix we have found is to lag in the velocity in time from un/vn to ub/vb in the gathering of the surface velocities in icestp.F90 in the fields u_io/v_io.
At nfice=1, this would make sense since this is the way one treats friction in leapfrog.
For nfice>1, it also seems to help but then the logic is a bit lost on me...
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Change History (7)
Changed 16 years ago by nemo_user
comment:1 Changed 15 years ago by dupontf
comment:2 Changed 15 years ago by ctlod
- Resolution set to fixed
- Status changed from new to closed
comment:3 Changed 8 years ago by nicolasmartin
- Keywords ocean removed
comment:4 Changed 6 years ago by nemo
- Keywords LIM* added
comment:5 Changed 2 years ago by nemo
- Keywords r2 added
comment:6 Changed 2 years ago by nemo
- Keywords v2 added; r2 removed
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instead of nemo_user, this ticket should have shown my user name: dupontf or frederic.dupont@…
Fred.