[MITgcm-support] on the control of sea ice growth

[whale]

Dear friends

Recently, when I set up an experiment to simulate the Antarctic region, I suffered from a tricky question. As we known, when the sea surface layer become super-cooled (cooler than the in situ freezing point temperature) around the Antarctica continental shelf, the sea ice will grow. Then, the temperature of the surface layer will be warmed up to the freezing point by extracting the latent heat released from the growth of sea ice. Now, the question is that I have got a source of super-cooled water mass which comes from the ocean cavity beneath the ice shelf. When this super-cooled water mass ascend to the surface layer, huge latent flux are continuously extracted to warm this super-cooled ice shelf water up to the freezing point by the sea ice growth. As a result, the Qnet seems to be incredible large (up to ~1e4 W/m2/s) at where the ice shelf water outcrop the sea surface in the astral summertime.

I want to know is if there is a parameter in the namelist to control the sea ice growth when the surface layer is super-cooled, and thereby I can slow down this process to prevent the incredible large heat flux at where the ice shelf water outcrop. Any suggestions and comments are appreciated.

Cheers

 

Chengyan Liu
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