[MITgcm-devel] heff_max...more sea ice issues

[Dimitris Menemenlis]

> 2. I don't see why changing the time step should save you any time anyway:
> The seaice model (including the lsr or evp solver) is called at every time
> step and changing the time step can only affect the stability (if you do an
> asynchonous time stepping scheme). We have not (yet) implemented a scheme
> that calls the seaice model or parts of it only every so often (depending on
> the time step). This is commonly done in other models and seems to be good
> way of reducing the computational cost (if the ice model is slow, why is the
> ice model slow? It's a 2D model? I don't get it!).

Martin, unless I have screwed up in implementation, when using LSR solver, 
SEAICE_deltaTdyn allows you "not" to call LSR at every time step.  For example 
one could have deltaTmom=900 and SEAICE_deltaTdyn=3600, which would call LSR 
solver only once every 3 model time steps.