[MITgcm-devel] ICE workshop - recap and homework!

[Martin Losch]

Hi there,

please find my summary here
<http://http://mitgcm.org/~mlosch/cmp_legacy.pdf>

Basically, the non-legacy ice creates more ice in my configuration, but 
parameter choices are not what I would use in this configuration.

Martin


On 03/08/2012 05:50 PM, Martin Losch wrote:
> Dear seaice-folks,
>
> based on the online-discussion of this week, I have come up with a slightly updated version of SEAICE_OPTIONS.h (actually not changed from the previous one, but now we do not need to edit it any longer to make it work, thanks to Gael's recent fixes) and data.seaice. The "only" change is in the "turbulent flux" parameters. The new data.seaice contains
>> SEAICE_mcPheeTaper=0.92,
> which is meant to reproduce the default behavior of the McPhee parameterization that used to be invoked with defining MCPHEE_OCEAN_ICE_HEAT_FLUX and GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR. Note, however, that last week (it seems so far away) we agreed to allow supercooled water to turn into ice. This is reflected in the default behavior of the new flag SEAICE_frazilFrac=1. (if for some reason you don't want this, then set this flag to 0., but I suggest that for our "baseline" tests, that you leave this parameter unchanged).
>
> Now, based on today's code, I have used the SEAICE_OPTIONS.h and data.seaice, and even the data.diagnostics, that I constructed from Gael's message, to run my configuration for 7 days, and so far things look good, except that the diagnostics 'oceSPflx' is not available, so I commented out the corresponding line in data.diagnostics. Also note, that I copied Gael's list of diagnostics to the DIAG_STATIS_PARMS namelist, so that building the budget might be a little easier. Whatever you prefer.
>
> So, having in mind the deadline of Mar30, I will not keep you any longer from starting your homework: start your integrations with the parameters included in the attachment, I already have. Good luck!
>
> Martin
>
> PS. I just hope that I didn't screw up (o:
>
>
>
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-- 
Martin Losch
Alfred Wegener Institute for Polar and Marine Research
Postfach 120161, 27515 Bremerhaven, Germany;
Tel./Fax: ++49(0471)4831-1872/1797