#287 closed Enhancement (fixed)
add surface tilt in EVP rheology of LIM3
| Reported by: | gm | Owned by: | nemo |
|---|---|---|---|
| Priority: | normal | Milestone: | |
| Component: | LIM3 | Version: | v3.0 |
| Severity: | Keywords: | LIM* v3.0 | |
| Cc: |
Description
the surface tilt have to be taken into account in the ice momentum equation.
This is done by first adding a ssh_m field in sbc_oce and in sbcssm in order to obtain a mean ssh field over nn_fsbc time-steps
then add the gradient of the ssh_m in limrhg.F90 module.
In addition, a few style modification have been added in limrhg together with 2 minor optimisations: (1) a /2. have been replaced by a * 0.5 and (2) some zdd2 replaced by zdd*zdd
The 3 routines are in attachment. They have been tested in in ORCA2-LIM3 with the CLIO forcing (version 3). This stabilises the model (500y have been performed without any explosion, instead of just 6 years without the surface tilt). Together with the use of ub, vb instead of un, vn (see ticket #255) it improves LIM3 stability.
Surface tilt implementation thanks to Sylvain Bouillon, tests thanks to Yevgeny Aksenov and Martin Vancoppelle
gurvan
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Change History (11)
Changed 15 years ago by gm
Changed 15 years ago by gm
Changed 15 years ago by gm
comment:1 Changed 15 years ago by gm
- Priority changed from minor to major
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 LIM added
comment:5 Changed 6 years ago by nemo
- Keywords LIM* added; LIM removed
comment:6 Changed 6 years ago by nemo
- Keywords release-3.0 added
comment:7 Changed 2 years ago by nemo
- Keywords r3.0 added; release-3.0 removed
comment:8 Changed 2 years ago by nemo
- Keywords v3.0 added; r3.0 removed
See the Ticket #286 ("Activate sea surface height in LIM3, improves its stability") which describes exactly the same thing !
Sorry about the duplication...
Gurvan