[MITgcm-support] SEAICE pkg, unstable HEFF
Mari Fjalstad Jensen
Mari.F.Jensen at uib.no
Tue Mar 29 08:10:41 EDT 2016
I am having some problems with the seaice pkg.
I am doing some simulations with a run for a 1000*2250 km domain, 5km
horz resolution and 30 depth levels, SEAICE pkg on.
Freshwater is added through EmP in a roughly 25000 km^2 area.
The run crashes after about 10 years when adding 0.08 Sv of
precipitation. The problem seems to be in two grid cells where the
sea-ice thickness (HEFF) increases with 50 m in one time step (400s).
The grid cells are located just at the edge of where I add freshwater. I
do not have this problem when adding less or no freshwater.
Any help with which SEAICE parameters to change would be highly appreciated.
# SEAICE parameters
SEAICEwriteState = .TRUE.,
SEAICEadvScheme = 33,
SEAICE_initialHEFF = 0.0,
SEAICE_deltaTtherm = 400.,
SEAICE_deltaTdyn = 400.,
SEAICE_deltaTevp = 20.,
SEAICE_multDim = 1,
ICE2WATR = 0.92D0,
SEAICEadvSnow = .FALSE.,
SEAICEuseFlooding = .FALSE.,
I have tried varying diffusion/viscosity parameters and domain where I
add freshwater without success..
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