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Interstitial bareground#1577

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glemieux wants to merge 4 commits into
NGEET:mainfrom
glemieux:interstitial_bareground_option
Draft

Interstitial bareground#1577
glemieux wants to merge 4 commits into
NGEET:mainfrom
glemieux:interstitial_bareground_option

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@glemieux

@glemieux glemieux commented Jun 14, 2026

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Changes how FATES handles interstitial bareground

Description:

CLM associated pull request is ESCOMP/CTSM#4094

Collaborators:

@ckoven

Expectation of Answer Changes: Yes

Description of generative AI usage (as necessary)

Checklist

If this is your first time contributing, please read the CONTRIBUTING document.

All checklist items must be checked to enable merging this pull request:

Contributor

  • The in-code documentation has been updated with descriptive comments
  • The documentation has been assessed to determine if updates are necessary
  • Describe use of generative AI (if necessary)

Integrator

  • FATES PASS/FAIL regression tests were run
  • Evaluation of test results for answer changes was performed and results provided
  • FATES-CLM6 Code Freeze: satellite phenology regression tests are b4b

If satellite phenology regressions are not b4b, please hold merge and notify the FATES development team.

Documentation

Test Results:

CTSM (or) E3SM (specify which) test hash-tag:

CTSM (or) E3SM (specify which) baseline hash-tag:

FATES baseline hash-tag:

Test Output:

bare_frac_area = (1.0_r8 - local_patch_fraction) * &
(currentPatch%area/AREA)

total_patch_area = total_patch_area + bc_out(s)%canopy_fraction_pa(ifp) + bare_frac_area

@glemieux glemieux Jun 14, 2026

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Note that this is dead code being removed (total_patch_area). It wasn't being used downstream.

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