GCHP 14.7.1

Release date: 17 Apr 2026

From CHANGELOG.md

Added

• Added build option MPI_LOAD_BALANCE to enable MPI load balancing in GEOS-Chem chemistry
• Added CMake build switch called JACOBIAN for carbon Jacobian runs

Changed

• Changed default settings to use MPI load balancing in chemistry to speed up GCHP runs unless KPP standalone is enabled
• Updated GitHub Actions to the latest versions
• Added several supplemental science guides to ReadTheDocs
• Added splash pages for "Supplemental Science Guides" and "Supplemental Technical Guides" to ReadTheDocs
• Updated Cloud-J submodule to commit 16d18b0 ("Fixed issues in format statements for verbose output")
• Updated GEOS-Chem submodule to 14.7.1
• Updated HEMCO submodule to 3.12.1
• Turned off vertical flipping of top-down meteorology in GCHPctmEnv if using ExtData2G

Pull requests included

• Compiler option for GCHP load balance in chemistry by @lizziel in #532
• Specify the latest version of GitHub Actions to avoid Node20.js deprecation warnings by @yantosca in #540
• Add new CPP flag for carbon Jacobian runs by @lizziel in #538
• GCHP 14.7.1 release by @yantosca in #543

Full Changelog: 14.7.0...14.7.1