[MITgcm-support] Too large of Sea Ice

[Dimitris Menemenlis]

Hi Madeleine, SEAICE_CAP_ICELOAD will not limit ice thickness, only the weight of that sea ice on Eta.

Out of curiosity, are you using pkg/shelfice in your configuration?

Dimitris


> On Aug 21, 2025, at 1:01 PM, Madeleine Kendall Youngs <myoungs at umd.edu> wrote:
> 
> Hi All,
> 
> I am running a circumpolar antarctic model at 1/12 degree and I keep getting so thick of sea ice it throws an r* error.   I can get it to be thin enough using ice diffusion but physically that seems dubious.  I have also tried the work arounds in the documentation 8.6.2.7 changing the SEAICEpressReplFac <http://lxr.mitgcm.org/lxr2/ident/MITgcm?_i=SEAICEpressReplFac> = 0;  and even the SEAICE_CAP_ICELOAD.  Changing the former didn’t seem to have an effect.  Changing the latter didn’t seem to change the h_eff max value I have been following in the STDOUT. Files.  I have attached the data.seaice file.  Do you all have any advice on how to solve this issue?  I have looked at the output and it is not just that I have weird ponds with sea ice that is too thick, it is too large in entire embayments that should be able to flush.  
> 
> Thanks,
> Madeleine


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