Interstitial bareground - #1577
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This reflects that the output will be a fraction dependent on certain logic having to do with handling bareground
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glemieux
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Jun 14, 2026
| bare_frac_area = (1.0_r8 - local_patch_fraction) * & | ||
| (currentPatch%area/AREA) | ||
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| total_patch_area = total_patch_area + bc_out(s)%canopy_fraction_pa(ifp) + bare_frac_area |
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Note that this is dead and duplicate code being removed. total_canopy_area wasn't being used downstream.
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These are effectively dummy values that are necessary to avoid NaN calcs in on the HLM side
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Changes how FATES handles "interstitial" bareground. Interstitial bareground in this context means the fraction of a given FATES patch area that is not covered by vegetation.
Description:
CLM associated pull request is ESCOMP/CTSM#4094
Relevant reference: CTSM technical note on MOST
Collaborators:
@ckoven @rgknox
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
Integrator
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: