[MITgcm-support] SSS restoring in selected regions

[Jean-Michel Campin]

Hi Dan,

There is a parameter "latBandClimRelax" to limit SSS & SST relaxation
to latitude (in absolute value) lower than latBandClimRelax.
This is not what you want, relaxation in high southern latitude,
but you can also specify the strength of relaxation (in second^(-1))
as a 2-D field that is read in from a file:
 lambdaThetaFile=
 lambdaSaltFile=
in namelist "PARM05" in the main parameter file "data".
The 2-D field that is loaded from these file will overwrite the
uniform (default) value 1/tauThetaClimRelax & 1/tauSaltClimRelax

Cheers,
Jean-Michel

On Thu, Oct 02, 2014 at 11:03:42AM +0100, Dan Jones wrote:
> Hello dear support list,
> 
> I am currently using the EXF package to restore the surface salinity of my
> Southern Ocean model to a monthly climatology.  I am doing this in order to
> discourage the formation of polynyas and the subsequent onset of deep
> convection in the Weddell and Ross seas.  The SSS restoring works, but
> since I restore at each surface grid cell, the restoring process alters the
> salinity of mode waters.
> 
> Is it possible to use EXF to only restore in a selected region (e,g, south
> of the Polar Front, south of a given latitude)?  If this is not already
> built into EXF, is there a place in the source code where I could place a
> simple "if, then" statement to only restore south of a given latitude?
> 
> Many thanks,
> Dan
> 
> ---------------------------------------------------------
> 
> Dr Dan Jones
> British Antarctic Survey, NERC
> Cambridge, UK
> 
> Phone: +44 (0)1223 221505
> Fax: +44 (0)1223 362616
> Skype:  dcjones.work
> 
> ---------------------------------------------------------

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