ctsm5.4.004

[CTSM Gatekeeper]

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Tag name: ctsm5.4.003
Originator(s): (Samuel Levis,UCAR/TSS,303-665-1310)
Date: Thu Dec 11 12:02:28 PM MST 2025
One-line Summary: Merge post5.4 branch to master

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

Update namelist_defaults:
- parameters for the li2024crujra fire method: PR Post 5.4 namelist updates #3626 by Will Wieder
- snow_thermal_cond_glc_method to Sturm1997 for clm6: PR #3626 by Will Wieder
- clm paramfile to ctsm60_params.c251124.nc for clm6: PR #3626 by Will Wieder
- stream_fldfilename_cultivar_gdds and stream_fldFileName_gdd20_baseline to latest files: PR post-5.4.n00: New crop calendar inputs and updated params (omni02) #3618 by Sam Rabin
- Update default NEON inputs to v4: PR #3626 by Will Wieder

Update cismwrap_2_2_010 to cismwrap_2_2_011 and ccs_config_cesm1.0.61_add_domain_ne3np4.pg2_1 to ccs_config_cesm1.0.66: PR #3626 by Will Wieder

Remove fsat effect on baf_peatf in the fire code and update the corresponding documentation in doc/source/tech_note/Fire/CLM50_Tech_Note_Fire.rst: PR #3626 by Will Wieder and Fang Li

Fix for RRTMGP errors caused by high surface temperatures: PR #3643 by Keith Oleson

Significant changes to scientifically-supported configurations
--------------------------------------------------------------

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.)

[Put an [X] in the box for any configuration with significant answer changes.]

[X] clm6_0

[X] clm5_0

[X] ctsm5_0-nwp

[ ] clm4_5


Bugs fixed
----------
List of CTSM issues fixed (include CTSM Issue # and description) [one per line]:
Fixes #3589 355+ K land temperature triggers RRTMGP error, by Keith Oleson
Fixes #3598 Change default snow_thermal_cond_glc_method, by Will Wieder
Fixes #3608 Fire calibration for CLM6 release, by Will Wieder and Fang Li
Fixes #3594 Update NEON data to v4, by Will Wieder
Fixes #3321 Crop calendar inputs needed with CRU-JRA climate, by Sam Rabin
Fixes #3658 Move c14_meshfile_none warning test to fatal error (resolves a build_namelist failure)

Notes of particular relevance for users
---------------------------------------
Changes made to namelist defaults (e.g., changed parameter values):
Namelist defaults changes listed in "Purpose and description of changes"
Changes to the datasets (e.g., parameter, surface or initial files):
References to new crop calendar inputs and new paramfile in "Purpose and description of changes"
Changes to documentation:
Updates to documentation mentioned in "Purpose and description of changes"

Notes of particular relevance for developers:
---------------------------------------------
Caveats for developers (e.g., code that is duplicated that requires double maintenance):
I will mention here something that took effect with ctsm5.4.000 (today's discussion reminded me):
We made two history fields default inactive (VEGWPLN, VEGWPPD) to allow LII2* tests to pass the COMPARE_base_no_interp phase. The problem and suggested solution appear in issues #3617 #3620.

Testing summary:
----------------
[PASS means all tests PASS; OK means tests PASS other than expected fails.]

build-namelist tests (if CLMBuildNamelist.pm has changed):

derecho - OK (the usual 2 tests expected to fail)

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

derecho - PASS

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

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

Answer changes
--------------

Changes answers relative to baseline: Yes

Summarize any changes to answers, i.e.,
- what code configurations: Clm60 due to updates to CLM6 and Clm50*G due to updated cism
- what platforms/compilers: All
- nature of change: larger than roundoff, possibly new climate

If this tag changes climate describe the run(s) done to evaluate the new
climate (put details of the simulations in the experiment database)
- casename: post-5.4.n02.ctsm5.4.000_HIST_test0 and an issue including links to diagnostics is expeced soon with most likely url https://github.com/NCAR/LMWG_dev/issues/130

Other details
-------------
List any git submodules updated (cime, rtm, mosart, cism, fates, etc.):
cismwrap_2_2_010 to cismwrap_2_2_011
ccs_config_cesm1.0.61_add_domain_ne3np4.pg2_1 to ccs_config_cesm1.0.66

Pull Requests that document the changes (include PR ids):
https://github.com/ESCOMP/ctsm/pull/3655

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