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v12: Update to GOCART v2.6.0#1030

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mathomp4 wants to merge 1 commit intofeature/sdrabenh/gcm_v12from
feature/v12-gocart-2.6.0
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v12: Update to GOCART v2.6.0#1030
mathomp4 wants to merge 1 commit intofeature/sdrabenh/gcm_v12from
feature/v12-gocart-2.6.0

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@mathomp4 mathomp4 commented Feb 5, 2026

This PR updates GEOSgcm v12 to GOCART v2.6.0. v2.6.0 is the v12 equivalent of v2.5.0 but with some changes for v12:

Changed

  • Updated RC configuration settings for GEOSgcm v12
    • Adjusted pressure_lid_in_hPa values for various components (CA2G: 0.01→10 hPa for bc/br/oc, NI2G: 0.01→10 hPa, DU2G: 0.01→10 hPa, SS2G: 0.01→40 hPa, SU2G: 0.01→1 hPa)
    • Switched dust (DU2G) emission coefficients (Ch_DU) from L072 to L181 values
    • Updated dust (DU2G) fwet parameter from 0.8 to 1.0 for all bins
    • Switched sea salt (SS2G) emission_scale from L072 to L181 values

Again, I leave it to @vbuchard and @acollow to comment further.

@mathomp4 mathomp4 self-assigned this Feb 5, 2026
@mathomp4 mathomp4 requested a review from a team as a code owner February 5, 2026 17:29
@mathomp4 mathomp4 added the Non 0-diff The changes in this pull request are non-zero-diff label Feb 5, 2026
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mathomp4 commented Feb 5, 2026

Note to @sdrabenh: I've moved the develop branch to develop as that should be where v12 GOCART development now happens.

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