[MITgcm-devel] free drift ice model

[Dimitris Menemenlis]

> Should maybe be a bit careful re. applicability of Arctic numbers
> for Antarctic sea-ice (latter seems more "loose", so more in free drift).
> But maybe ok as first guess.

agree.  also differences in roughness.  multiyear Arctic ice is much rougher 
because of sails and keels than first year Antarctic ice.  that is why I 
suggested to use 1st year ice numbers.  but in most of Arctic first-year ice 
areas away from coastlines, internal ice stress are negligible compared to 
ice-ocean drag, as is case for Antarctic.

> Maybe again be careful in stating what works when.
> Matt probably still has B-grid code enabled for which
> his assumption is correct.
> But good to hear, the C-grid code has it.
> Might be worth switching then if it's "well" tested. Is it?

you are right.  this only works for c-grid.  it's tested and it works well, but 
not yet "well" tested.  will let you know how it goes.

> I ran v3.iter0 with latest growth code.
> Seaice concentration misfits is reduced by 2/3, not bad.

cool!  did you turn on sea-ice in adjoint?  or is it passive?

> Still unclear re. fin.diff. sensitivities.
> Question is, which part of the code did it.

I will experiment with the snow stuff I discussed in earlier e-mail and let you 
know how it goes.

D.