ctsm5.4.023

[CTSM Gatekeeper]

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Tag name: ctsm5.4.023
Originator(s): samrabin
Date: Tue Mar 10 07:44:59 PM MDT 2026
One-line Summary: Replace more netCDFs with NaN issues

Purpose and description of changes
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Replaces the remaining input netCDF files that had problems with NaNs.

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.)

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

[ ] clm6_0

[ ] clm5_0

[ ] ctsm5_0-nwp

[ ] clm4_5


Bugs fixed
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[Remove any lines that don't apply. Remove entire section if nothing applies.]

List of CTSM issues fixed (include CTSM Issue # and description) [one per line]:
Resolves NaN values in some input files cause problems with ifx compiler #3764
Resolves ciso_dec2050Start tests fail with ifx compiler #3790
Resolves Misc. ctsm_sci tests failing with ifx compiler #3792

Notes of particular relevance for users
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Changes to the datasets (e.g., streams, surface or initial files):
NEON and PLUMBER2 surface datasets updated without NaN _FillValue so have a .no_nan_fill.nc suffix
Zender soilerod datasets updated without NaN _FillValue so have a .no_nan_fill.nc suffix
Fire-emission factors dataset updated NaN _FillValue so have a .no_nan_fill.nc suffix

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

Caveats for developers (e.g., code that is duplicated that requires double maintenance):
The finidat files have NaN's on them. But, using the modified files causes changes to answers.
This shows how the NaN's are having an impact that is different from a _FillValue change.

Changes to tests or testing:
Was able to remove many expected fails

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

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

derecho - OK

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

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

If the tag used for baseline comparisons was NOT the previous tag, note that here:


Answer changes
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Changes answers relative to baseline: no bit-for-bit

Other details
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Pull Requests that document the changes (include PR ids):
(https://github.com/ESCOMP/ctsm/pull)
#3809 -- Replace more netCDFs with NaN issues

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