[MITgcm-devel] sea ice clean up this week

[Gael Forget]

Hi Ian,

the clean up tasks at hand include replacing CPPs with run time parameters
(those layers of CPPs stand in the way of testing and understanding the code as
reflected e.g. by the runaway T thread), sorting out some of diagnostics, removing at least
one bug, improving the check and summary stuff. I am probably forgetting a couple things.
Expect ~ daily check-ins as I will try to do one thing after the other. I will do my best 
to keep you guys posted after each clean up step through the devel list. 

As far as the runaway T thread, it seems pretty clear (as stated by Martin's) that what makes 
seaice_growth most unsafe is omitting the turbulent flux for freezing. There is a variety 
of ocean and ice parameter sets that will likely create instances of 'slightly' below freezing T. 
Non flux limited advection schemes and the CAP_HEFF stuff to start with, and then there is the 
variety of hypotheses you guys discussed. Martin caught one that is now thought to be related 
to allowInteriorFreezing. Chasing this one down is probably useful. It wont save us the next time 
somebody else gets in the same situation for a different reason though. Fortunately including 
turbulent flux for freezing makes it safe, or at least much safer. In my view that's the bottom line.

Cheers,
Gael

On Feb 6, 2012, at 5:06 PM, Ian Fenty wrote:

> Gael,
> 
> Thanks for volunteering to do the "cleanup" of seaice_growth.  
> 
> May I ask what it is that you intend to change?  I recently offered a few suggestions based on the investigation of Martin's problem of low SSTs but received no response other than from him.  I was waiting for more comments about these suggestions and perhaps consensus about the best way to proceed before I started checking in code.
> 
> -Ian
> 
> 
> 
> On Feb 6, 2012, at 1:39 PM, Gael Forget wrote:
> 
>> Dear all,
>> just a quick email to let you know that I will proceed
>> with the needed seaice clean up in the next few days.
>> I will wait until tomorrow to do the first part, to avoid 
>> interfering with the test  of Jean-Michel's commit tonight.
>> Along the same line, I would appreciate it if you could 
>> restrain for committing further changes to pkg/seaice 
>> for a few days. It would make my life much easier.
>> Thanks in advance,
>> Gael
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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> 
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