[MITgcm-support] maintaining sea ice coverage over multi-year run on cs32

[Jean-Michel Campin]

Hi Andrew,

The test case in:
> verification/global_ocean.cs32x15/input.icedyn
is not tuned (and is not using pkg/seaice thermo but instead
pkg/thsice thermodynamics, so Matt's suggestions do not
apply directly).
I started, a couple of years ago, to tune it a little bit, 
but did not finish so I did not update the list of parameters. 
I know Martin Losch did some run too with this set-up. 

Thanks,
Jean-Michel

If you are using similar parameter from:
On Wed, Jun 23, 2010 at 03:52:49PM -0700, Matthew Mazloff wrote:
> Hi Andrew,
>
> Well this depends on more than just sea-ice model -- obviously the ocean 
> and atmospheric state play a huge role
>
> That said I use a lot besides just the defaults -- with most if not all 
> of this coming from Dimitris....
>
> Not sure if this helps, but here it is anyway:
>
> Matt
>
> ps> I also use Ian Fenty's routines -- .i.e. set
> #define SEAICE_ALLOW_TD_IF
> in SEAICE_OPTIONS.h
>
>
>
>  &SEAICE_PARM01
>       SEAICEuseDYNAMICS = .TRUE.
>       SEAICEuseFlooding  = .TRUE.,
>       SEAICEuseFluxForm  = .TRUE.,
>       SEAICEadvScheme    = 2,
>       SEAICE_no_slip = .TRUE.,
>       SEAICE_airTurnAngle = 18.,
>       SEAICE_waterTurnAngle = 18.,
>       SEAICEadvSnow = .TRUE.,
>       SEAICEadvSalt      = .TRUE.,
>       SEAICE_initialHEFF = 0.,
>       LSR_ERROR          = 1.e-4,
>       SEAICE_strength    = 1.7e+04,
>       SEAICE_waterDrag   = 5.55,
>       SEAICE_drag        = 0.0012,
>       SEAICE_salinity    = 0.3,
>       SEAICE_gamma_t     = 259200.0,
>       SEAICE_dryIceAlb   = 0.92,
>       SEAICE_wetIceAlb   = 0.80,
>       SEAICE_drySnowAlb  = 0.96,
>       SEAICE_wetSnowAlb  = 0.83,
>       HO                 = 0.9,
>       MIN_ATEMP          = -40.,
>       MIN_TICE           = -40.,
>       ICE2WATR           = 0.92D0,
>       SEAICEuseMetricTerms = .TRUE.,
>  /
>
> On Jun 23, 2010, at 4:16 AM, Andrew Keats wrote:
>
>> Hi,
>>
>> I have been running the dynamic sea ice model according to the
>> conditions in verification/global_ocean.cs32x15/input.icedyn, and
>> after only 3 to 4 years, the winter ice cover seems to be reduced by
>> quite a bit (especially around Antarctica).  Does anyone know if
>> there is a specific set of parameters/external forcings I should be
>> using in order to maintain good sea ice cover year after year?
>>
>> Many thanks,
>>
>> Andrew
>>
>>
>> --
>> Andrew Keats
>> NSERC Postdoctoral Fellow
>> Department of Physics and Physical Oceanography
>> Memorial University of Newfoundland
>>
>>
>>
>>
>>
>>
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>
>
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