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bcgen gives sea ice fractions that are too high and too extensive

aflaim

Andrew Flaim
New Member
I am trying to use B-compset output to generate SST and ICE input for an F-case. I believe I need to use bcgen to convert the B-compset output to mid-month values expected as input for the F-compset.

However, sea ice fraction seems too high and too extensive after running bcgen.

I am using python to re-grid the POP output and correct SST and ice according to Hurrell 2008 prior to running bcgen. The pre-bcgen climatology attached below shows ice fraction after performing the re-gridding and Hurrell 2008 corrections.

I have attached the pre- and post-bcgen climatologies which illustrate the overly extensive sea ice after running ./bcgen.

Does bcgen typically have such a dramatic impact on sea ice extent? Does anyone have advice for addressing this issue?

Thank you,
Andrew
 

Attachments

  • post_bcgen.png
    post_bcgen.png
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  • pre_bcgen.png
    pre_bcgen.png
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