ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)

Issues

• New fails with updated CISM because of history file changes in it for some ERP tests

  bugtesting
  Bug

  ESCOMP/CTSM#4256 · Filter by author ekluzek opened on Oct 12, 2026 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  1

  

• Add a script to create Aerosol monthly climatology from CPLHIST daily data to use for CESM3/CMIP7 1850 simulations

  b4benhancement
  Unread
  ESCOMP/CTSM#4257·ekluzek opened Oct 14, 2026 · Updated Oct 28, 2026
  9

  

• Update solver in CTSM

  code healthenhancement
  Task

  ESCOMP/CTSM#2422 · Filter by author ekluzek opened on Mar 14, 2024 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  16

  

• Update and distinquish the quadratic solver

  b4benhancementmodernizationsize: small
  Task

  ESCOMP/CTSM#4254 · Filter by author ekluzek opened on Oct 10, 2026 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  

• Develop the "What'sNewinCTSM5.5" release notes

  b4bdocs:newdocs-loc:codebasedocumentation
  Documentation

  ESCOMP/CTSM#4249 · Filter by author slevis-lmwg opened on Oct 8, 2026 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  1

  

• Create CTSM5.5 release tag for CESM3

  branch tag: release
  Task

  ESCOMP/CTSM#4248 · Filter by author wwieder opened on Oct 8, 2026 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  

• List failing tests – especially F or B cases, address these if needed

  nexttesting
  Testing

  ESCOMP/CTSM#4258 · Filter by author wwieder opened on Oct 15, 2026 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  1

  

• ctsm5.4.068: 1850 cmip7 cesm3 DATM

  enhancementnon-b4bsciencetest: aux_clmtest: ctsm_sciusability
  Unread
  ESCOMP/CTSM#4250·ekluzek opened Oct 8, 2026 · Updated Oct 25, 2026
  13

  

• Turn irrigation off for I1850, but on for all other Clm60 compsets

  blockernon-b4bpriority: high
  Usability

  ESCOMP/CTSM#4056 · Filter by author samsrabin opened on May 28, 2026 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  14

  

• Update Clm60 compsets so that CRUJRAb is the default

  blocked: answer changingenhancementnon-b4b
  Task

  ESCOMP/CTSM#2961 · Filter by author ekluzek opened on Feb 11, 2025 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  2

  

• Compset update for cesm3_0 release

  enhancementnon-b4bpriority: highscienceusability
  Feature

  ESCOMP/CTSM#3044 · Filter by author ekluzek opened on Mar 31, 2025 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  1

  

• Make fates_paramfile appear on input data list

  b4bbugnext
  Unread
  ESCOMP/CTSM#4176·mvdebolskiy opened Aug 14, 2026 · Updated Oct 22, 2026
  4

  

• Script to create aersol climatology from CPLHIST spinup simulations

  b4benhancementscienceusability
  Feature

  ESCOMP/CTSM#4285 · Filter by author ekluzek opened on Oct 27, 2026 · ctsm5.5.0 (cesm3_0_beta12; cesm3.0.0 release branch tag)
  2