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Fix mismatched species MW in GEOS-Chem 14.5 in CAM#1631

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Fix mismatched species MW in GEOS-Chem 14.5 in CAM#1631
jimmielin wants to merge 1 commit into
ESCOMP:cam_developmentfrom
jimmielin:hplin/gc_sim_dat_fix

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Fixes #1630

When GEOS-Chem v14.5 was brought in EBZ was added to solsym at index 89 without its 106.167 value being added to adv_mass; and TMB was moved from the non-advected tail into the advected block, but its old 106.167 was left behind between TLFUO2 and TRO2

This has immediate consequences for sulfate levels and seasalt and bc_a4 due to broken MAM coupling.

All users of GEOS-Chem within CESM running a tag more recent than cam6_4_090 should be advised to apply this fix immediately.

When GEOS-Chem v14.5 was brought in EBZ was added to solsym at index 89 without its 106.167 value being added to adv_mass;
and TMB was moved from the non-advected tail into the advected block, but its old 106.167 was left behind between TLFUO2 and TRO2

This has immediate consequences for sulfate levels and seasalt and bc_a4 due to broken MAM coupling.

All users of GEOS-Chem within CESM running a tag more recent than cam6_4_090 are advised to apply this fix immediately.
@jimmielin
jimmielin requested a review from lizziel July 23, 2026 14:54
@jimmielin jimmielin added bug-fix This PR was created to fix a specific bug. Must have CESM3 misc tag issue or PR candidate for upcoming misc tag labels Jul 23, 2026

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Apologies if I brought in that bug!!!

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bug-fix This PR was created to fix a specific bug. misc tag issue or PR candidate for upcoming misc tag Must have CESM3

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