[MITgcm-support] seaice_saltFrac and SEAICE_VARIABLE_SALINITY

[Daniel Goldberg]

Hello All

I am interested in varying salt retention with pkg/seaice, and am curious about the parameter SEAICE_saltFrac. Firstly, it seems from looking at seaice_growth.F that setting the parameter has no impact unless #define SEAICE_VARIABLE_SALINITY is set -- is this the case? (it is not something i can determine from readthedocs.)

Secondly, I just want to make sure that the parameter does what I think it does. Readthedocs states it is the "salinity newly formed ice (as fraction of ocean surface salinity)" but does not give further detail. Is this salinity advected conservatively, and accounted for in the surface salinity tendency (or freshwater flux, depending on configuration) when sea ice forms, and also when sea ice melts?

Also -- the parameter seaice_salt0 exists -- but is not mentioned in Readthedocs. Is it now deprecated?

Many thanks for your time!
Dan

--
Daniel Goldberg, PhD (he/him)
Reader in Glaciology
School of Geosciences, University of Edinburgh
Geography Building, Drummond Street, Edinburgh EH8 9XP


em: dan.goldberg at ed.ac.uk<mailto:dan.goldberg at ed.ac.uk>
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