add new pft physiology from NGEE-Arctic IM4 #7906
Open
+737
−189
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…machine with limited input data, but NOT YET fully work. Two tests are actually similary as 'elm_usrdat' test, but with 42_FLUXNETSITES and a few physiology parameters, based on Sulman et al. (2021).One of them is a short run to test codes, while another is a long run for bug-fixing heavy winter snow caused issue in arctic pft phenology. Those tests won't change simulation results until new codes and parameters are pull in.
…w a designated value
…y PFT. Now column N fixation is calculated as a weighted average over PFTs.
Add rhizome turnover
…w a designated value (modified approach)
… snow winter, snow-melt may last past the summer solstice. This likely causes no PFT onset stage even when a short non-snow season occurs. Add a flag for switching plant growth onset gdd summation end option in phenology. The switch is for extending onset stage up to start of offset in Fall, rather than to summer solstice by default. Allow 2 tests function with new parameter file.
…me round-off differences, which may cause one test failure (although very tiny difference).
…t al. (2021), to be included in ELM land developer test suites.
Contributor
Author
|
Contributor
Author
|
@fmyuan I think it'd be best if you or someone from the NGEE-Arctic team wrote the PR description. |
Contributor
I will. And I believe Ben already put something into E3SM repo/archive, but let me check. |
fmyuan
approved these changes
Dec 1, 2025
Contributor
fmyuan
left a comment
fmyuan
left a comment
There was a problem hiding this comment.
Looks good to me, and pass land developer tests on cades-baseline machine.
Contributor
|
IM4 new feature overview.pdf |
30 tasks
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
5 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Description:
Plant functional type definition and physiological changes for improved arctic vegetation representation. (1) flexible Arctic PFT definitions, currently 12 PFTs, with lifeforms of non-vascular, woody, graminoid, or cropped, plus properties such as climate-zone, N-fixer, and needle-leaf type; (2) allow dormancy of root respiration during winter period; (3) add 'Rhizome' as coarse root for non-woody PFT; (4) Allow evergreen PFT to have storage pool as well; and (4) Allow N fixation parameterized for individual PFT.
[non-BFB] due to round-off in balance terms.