15_fatespftx14_hlmpft_paramfile

[rosiealice]

This PR adds a 15th parameter to the FATES parameter description, which is intended as a crop. The crop PFT is assigned area differently to the others and the index of the fates_landuse_crop_lu_pft_vector variable is used (previously 13, now 15) to define it.

When this parameter file is used, a seperate PFT is created for crop which is generated during land use change via the allocation of crop area to PFT 15.

For now it is functionally identical to PFT 13 (cool C3 grass) but we may make it have different physiology in a follow up PR.

This file was generated from the file in #52 using the following command of in fates/tools directory:

python FatesPFTIndexSwapper.py --fin ../parameter_files/fates_params_default_14fpft.nc --fout fates_params_default_crops.nc --pft-indices 1,2,3,4,5,6,7,8,9,10,11,12,13,14,13

where
fates_params_default_14fpft.nc is created first from fates_params_default.cdl using NCGEN.

In this process, the order of the variables appears to have been swopped around somewhat. I don't know if this is the intended functioality of the tool. I have done it three times and each time the result has been the same. This makes it harder to look at the differnences introduced by this PR.

In principle the physiology of this should be identical to previous runs, and so this change -should- be BFB, with a following wind? Maybe there are some methodoligical differences in the area allocation that would prevent it from being identical. I anticipate it would be identical scientifically.

Addresses this issue:
NorESMhub/CTSM#194

Description:

Collaborators:

Expectation of Answer Changes:

Checklist:

• My change requires a change to the documentation.
• I have updated the in-code documentation .AND. (the technical note .OR. the wiki) accordingly.
• I have read the CONTRIBUTING document.
• FATES PASS/FAIL regression tests were run
• If answers were expected to change, evaluation was performed and provided

Test Results:

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

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

FATES baseline hash-tag:

Test Output:

[rosiealice]

Comparison diagnostics will be in here: https://ns9560k.web.sigma2.no/datalake/diagnostics/noresm/rosief/i2000.ne16pg3_tn14.fatesnocomp.noresm3_0_beta11.CRUJRA.14hlmpft_LUC_2000FSx16pft_15fpft.2026-02-13/

[rosiealice]

closing as superceded by #52