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

[Matthew Mazloff]

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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