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

[Andrew Keats]

Many thanks for the information, Matt and Jean-Michel.

Are the parameterizations used for the WTD experiment (Sec. 4.4 in
Losch et al., Ocean Modelling, 2010) available online anywhere?

Andrew


On Thu, Jun 24, 2010 at 10:49 AM, Jean-Michel Campin <jmc at ocean.mit.edu> wrote:
> 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
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> MITgcm-support mailing list
>>> MITgcm-support at mitgcm.org
>>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>>
>>
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