From b88c1fe4a3706d8cf5ab2f87b6dcddaf5afae833 Mon Sep 17 00:00:00 2001 From: Haipeng Lin Date: Thu, 23 Jul 2026 10:50:09 -0400 Subject: [PATCH] Fix mismatched species MW in GEOS-Chem 14.5 in CAM 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. --- src/chemistry/geoschem/mo_sim_dat.F90 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/chemistry/geoschem/mo_sim_dat.F90 b/src/chemistry/geoschem/mo_sim_dat.F90 index 3519949fc8..58248d49b0 100644 --- a/src/chemistry/geoschem/mo_sim_dat.F90 +++ b/src/chemistry/geoschem/mo_sim_dat.F90 @@ -237,7 +237,7 @@ subroutine set_sim_dat 51.45_r8, 67.45_r8, 1.0_r8, & 28.01_r8, 108.14_r8, 62.13_r8, & 29.0_r8, 29.0_r8, 29.0_r8, & - 29.0_r8, 46.07_r8, & + 29.0_r8, 106.167_r8, 46.07_r8, & 105.06_r8, 107.07_r8, 78.07_r8, & 91.08_r8, 62.08_r8, 68.07_r8, & 60.06_r8, 58.04_r8, 165.36_r8, & @@ -346,7 +346,7 @@ subroutine set_sim_dat 136.09_r8, 96.06_r8, 96.06_r8, & 150.13_r8, 89.13_r8, 161.2_r8, & 131.19_r8, 89.08_r8, 60.11_r8, & - 147.1_r8, 106.167_r8, 173.16_r8, & + 147.1_r8, 173.16_r8, & 187.19_r8, 173.16_r8 /) ! extfrc_lst contains a list of species that have 3-D emissions (distributed in the vertical by HEMCO)