[MITgcm-support] seaice advection without dynamical solver

[Dimitris Menemenlis]

> If I set uc(vc) = Uvel(Vvel)(@ k=1) in seaice_advdiff before calling advect.F
> then the seaice will get advected by the ocean surface velocity.

Matt, I have never tried it but it sounds reasonable and that it should work. 
Of course the sea-ice does not in practice drift as surface velocity, since it 
responds both to drag from above and from below as well as to internal ice stresses.

Dimitris