Add tillage and residue removal #2311
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Each crop column should only have one patch, so by only calling these for crop columns, we can simplify things considerably.
"Throw error during namelist build if tillage is called with FATES"
Update FATES tests to double precision This pull request updates the fates tests to set the output precision to double precision. The usermod fates_sp is similarly updated.
Improvements to processing of crop calendar files In python/ctsm/crop_calendars/, process_ggcmi_shdates.py and regrid_ggcmi_shdates.py are used to convert the raw GGCMI crop calendar files into CTSM-compatible versions. This update fixes some bugs, removes dependencies on the nco utilities, enables the use of surface datasets as template files (in addition to the existing ability to use CTSM output files), and standardizes things for consistency with other CTSM Python tools.
See ESCOMP#2310: NEON tests sometimes fail (ESCOMP#2310)
See ESCOMP#2310: NEON tests sometimes fail (ESCOMP#2310)
(cherry picked from commit 142c2c1)
Makes no changes, but I realized the cherry-pick I did before won't let Github recognize that this is up-to-date with the tillage branch.
samsrabin
added
enhancement
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Seems like this will have to be integrated into MatrixCN before @slevis-lmwg can merge #640 |
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Description of changes
This PR combines #2040 and #2297.
Tillage: This PR brings in the tillage code written by Sam Levis and Michael Graham and used in Graham et al. (2021, ERL, doi:10.1088/1748-9326/abe6c6). Low- and high-intensity tillage here work by increasing the decomposition rate of different soil carbon pools. These "decomposition multipliers" vary based on soil pool and how long it's been since the crop was planted; they are set with new paramfile variables
till_decompk_multipliersandmimics_till_decompk_multipliers. Note that tillage is off by default.Residue removal: Adds parameter
crop_residue_removal_frac(default 0) that represents what fraction of post-harvest crop residues (stems and leaves) should be removed to the crop product pool rather than being transferred to litter.Specific notes
Contributors other than yourself, if any: @mwgraham, @slevis-lmwg, @danicalombardozzi
CTSM Issues Fixed:
run_sys_testsno longer fails on IzumiAre answers expected to change (and if so in what way)? No
Any User Interface Changes (namelist or namelist defaults changes)?
tillage_modewith optionsoff(default),low, andhigh.use_original_tillage_phases(false by default; see Add soil tillage for crops #2040).max_tillage_depth.crop_residue_removal_frac(default 0)Testing performed, if any:
aux_clmpasses