ctsm5.4.016

[CTSM Gatekeeper]

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Tag name: ctsm5.4.016
Originator(s): samrabin (Sam Rabin, UCAR/TSS)
Date: Fri Feb 6 09:09:56 MST 2026
One-line Summary: Merge b4b-dev to master

Purpose and description of changes
----------------------------------

Merge b4b-dev to master

Significant changes to scientifically-supported configurations
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Does this tag change answers significantly for any of the following physics configurations?
(Details of any changes will be given in the "Answer changes" section below.)

[ ] clm6_0

[ ] clm5_0

[ ] ctsm5_0-nwp

[ ] clm4_5


Bugs fixed
----------

List of CTSM issues fixed (include CTSM Issue # and description):
- [ESCOMP/CTSM Issue #3696: CropPhenology: Rename leafout to gddtsoi](https://github.com/ESCOMP/CTSM/issues/3696)
- [ESCOMP/CTSM Issue #3057: error in errsol computation in BalanceCheckMod reports the wrong albedo values](https://github.com/ESCOMP/CTSM/issues/3057)


Notes of particular relevance for users
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Changes to CTSM's user interface (e.g., new/renamed XML or namelist variables):
- New `suppress_gddmaturity_warning` namelist flag, default false.


Notes of particular relevance for developers:
---------------------------------------------

Changes to tests or testing:
- New Python unit and system tests.
- New Fortran unit tests.
- RXCROPMATURITY_ tests added to expected failure list. Will be resolved soon.


Testing summary:
----------------

python testing (if python code has changed; see instructions in python/README.md; document testing done):

derecho - OK

regular tests (aux_clm: https://github.com/ESCOMP/CTSM/wiki/System-Testing-Guide#pre-merge-system-testing):

derecho ----- OK
izumi ------- OK


Other details
-------------

Pull Requests that document the changes (include PR ids):
- [ESCOMP/CTSM Pull Request #3713: Factor out new subroutine CropPhase_OnePatch](https://github.com/ESCOMP/CTSM/pull/3713)
- [ESCOMP/CTSM Pull Request #3633: Add history outputs: Crop biomass and LAI per harvest](https://github.com/ESCOMP/CTSM/pull/3633)
- [ESCOMP/CTSM Pull Request #3727: Minor improvements to generate_gdd20_baseline.py](https://github.com/ESCOMP/CTSM/pull/3727)
- [ESCOMP/CTSM Pull Request #3710: Improve radiation balance check](https://github.com/ESCOMP/CTSM/pull/3710)
- [ESCOMP/CTSM Pull Request #3729: generate_gdds: Work on arguments](https://github.com/ESCOMP/CTSM/pull/3729)
- [ESCOMP/CTSM Pull Request #3738: generate_gdds: Get file lists earlier](https://github.com/ESCOMP/CTSM/pull/3738)
- [ESCOMP/CTSM Pull Request #3741: ctsm5.4.016: b4b-dev merge 2026-02-05](https://github.com/ESCOMP/CTSM/pull/3741)

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