[MITgcm-devel] seaice+thsice update

[Jinlun Zhang]

Hi Jean-Michel,

Seasonal cycle of 2-2.5 m is already too much. Should be about 1 m.

Jinlun

Jean-Michel Campin wrote:

>Hi folks,
>
>I checked-in a new advection driver for thsice variable, 
>pkg/thsice/thsice_advdiff.F 
>and I started to evaluate how it works (in progress ...).
>
>I wanted to compare the results with Martin's version 
>in pkg/seaice (seaice_advdiff.F), so I tried it: 
>- run global_ocean.cs32 for more than 400yrs with exf &
> CORE forcing, until the model stop because sea-level was 
> uniformly too low (with realFreshWater, seaice-AdvSchem=1).
>
>- I also try with all the "C jmc: new version:" uncommented
> in pkg/seaice/seaice_advdiff.F ; I was not expecting 
> large differences, but in fact the mean sea-ice thickness
> in the Arctic is much larger (mean seasonal cycle: 
> from 3 to 3.5 m compared to 2 to 2.5 m before)
>I checked the maximum ice fraction, goes up to ~ 110 % in the
>previous version, and I think this is the reason why the 
>ice was much thiner.
>
>I am now trying without realFreshWater to run it longer.
>
>I will check-in this modif ("C jmc: new version:" uncommented)
>soon.
>
>Cheers,
>Jean-Michel
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>  
>

-- 

Jinlun Zhang
Polar Science Center, Applied Physics Laboratory
University of Washington, 1013 NE 40th St, Seattle, WA 98105-6698

Phone: (206)-543-5569;  Fax: (206)-616-3142
zhang at apl.washington.edu
http://psc.apl.washington.edu/pscweb2002/Staff/zhang/zhang.html