Opened 12 years ago

Closed 12 years ago

Last modified 3 years ago

#255 closed Enhancement (fixed)

LIM2 ice-ocean stress instability

Reported by: nemo_user Owned by: nemo
Priority: low Milestone:
Component: LIM2 Version: release-2
Severity: Keywords: LIM* ice stress
Cc: Review:
MP ready?:
Progress:

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…

Commit History (0)

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Attachments (1)

icestp.F90 (13.5 KB) - added by nemo_user 12 years ago.

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Change History (5)

Changed 12 years ago by nemo_user

comment:1 Changed 12 years ago by dupontf

instead of nemo_user, this ticket should have shown my user name: dupontf or frederic.dupont@…

Fred.

comment:2 Changed 12 years ago by ctlod

  • Resolution set to fixed
  • Status changed from new to closed

comment:3 Changed 4 years ago by nicolasmartin

  • Keywords ocean removed

comment:4 Changed 3 years ago by nemo

  • Keywords LIM* added
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