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negative ice coverage in bcgen

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yefee90@...
negative ice coverage in bcgen

Hi folks,

 

Recently, I created some boundary conditions (SST, ice_cov) from B compset for F compset. I followed the guide here and use the bcgen tool provided by NCAR to correct the SST and ice_cov. 

https://bb.cgd.ucar.edu/how-do-i-use-b-compset-history-output-create-sst...

However, after correction, I found the ice_cov in the climatology file has negative values and values exceeding 1. I expected this can be corrected in the model itself.  I did two experiments (one with corrected ice_cov, one with raw output from bcgen) to test my hypothesis and unfortunately, I found model output from these two experiments are not the same! That means the negative ice coverage does matter in the model.

Any thought on this? Shall we correct the ice_cov after bcgen?

 

Best,

CF

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