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Transfer biophysical variables for output with FATES dimensions#3760

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glemieux wants to merge 7 commits intoESCOMP:masterfrom
glemieux:fates-biophys-by-landuse
Open

Transfer biophysical variables for output with FATES dimensions#3760
glemieux wants to merge 7 commits intoESCOMP:masterfrom
glemieux:fates-biophys-by-landuse

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@glemieux glemieux commented Feb 13, 2026

Description of changes

This pull request updates the high frequency wrapper procedure in the interface to pass biophysical CLM variables to be output along FATES dimensions. The FATES land use x pft dimension is also added to the history module.

This pull request integration needs to be coordinated with NGEET/fates#1536.

Specific notes

Contributors other than yourself, if any: @ckoven

CTSM Issues Fixed (include github issue #):

Are answers expected to change (and if so in what way)?

Any User Interface Changes (namelist or namelist defaults changes)?

Does this create a need to change or add documentation? Did you do so?

Testing performed, if any:
(List what testing you did to show your changes worked as expected)
(This can be manual testing or running of the different test suites)
(Documentation on system testing is here: https://github.com/ESCOMP/ctsm/wiki/System-Testing-Guide)
(aux_clm on derecho for intel/gnu and izumi for intel/gnu/nag/nvhpc is the standard for tags on master)

NOTE: Be sure to check your coding style against the standard
(https://github.com/ESCOMP/ctsm/wiki/CTSM-coding-guidelines) and review
the list of common problems to watch out for
(https://github.com/ESCOMP/CTSM/wiki/List-of-common-problems).

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Fates regression testing of NGEET/fates#1536 is complete and B4B. Aside from updating the Changelog and the fates tag and commit, this is good to review.

@glemieux glemieux requested a review from rgknox February 24, 2026 00:41
@glemieux glemieux moved this from Finding Reviewers to Under Review in FATES Pull Request Planning and Status Feb 25, 2026
glemieux added 3 commits March 6, 2026 17:24
Change to using the ifx compiler and some more fixes

Updates ccs_config to 1.0.75 which has the new ifx compiler in use for derecho_intel, as well as updating to using ESMF8.9.0. This exposed problems in the code on two fronts when running with DEBUG mode:

Reliance on short-circuiting in if statements
Problems with NaN's, in datasets especially _FillValue
For the former, we changed code to break up if statements so this would work. And with the latter we point to new datasets with the NaN's handled. mosart and cdeps code also had short-circuiting problems.

@samsrabin created a script to examine all of the files in namelist_defaults_ctsm.xml and in the testmod directories to check if there were problems with NaN's in _FillValues. The modified files here all were the result
of the first pass of that script. The new files all have a ".no_nan_fill.nc" ending on them.

Includes updating submodules: ccs_config, cdeps, mosart
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glemieux commented Mar 9, 2026

Regression testing aux_clm on derecho against ctsm5.4.022 looks mostly good with known FIELDLIST differences. There are a couple of clm tests that are failing or have diffs:

This might be related to #3797:

    FAIL ERP_P64x2_Ld396.f10_f10_mg37.IHistClm60Bgc.derecho_intel.clm-monthly--clm-matrixcnOn_ignore_warnings BASELINE ctsm5.4.022: DIFF
    FAIL REP_P64x2_Ld396.f10_f10_mg37.IHistClm60Bgc.derecho_intel.clm-monthly--clm-matrixcnOn_ignore_warnings BASELINE ctsm5.4.022: DIFF

This might be related to #3617:

FAIL LII2FINIDATAREAS_D_P256x2_Ld1.f09_t232.I1850Clm60BgcCrop.derecho_intel.clm-default--clm-matrixcnOn_ignore_warnings RUN time=115

Note that I was seeing an issue with ./cs.status in which it is not appropriately flagging the expected failures.

Results: /glade/u/home/glemieux/scratch/ctsm-tests/tests_0308-224521de

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glemieux commented Mar 9, 2026

This might be related to #3617:

FAIL LII2FINIDATAREAS_D_P256x2_Ld1.f09_t232.I1850Clm60BgcCrop.derecho_intel.clm-default--clm-matrixcnOn_ignore_warnings RUN time=115

Resubmitting cleared this particular unexpected failure.

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