Update scale-aware 3DTKE EDMF and introduce TTE-EDMF in GFS PBL scheme#303
Merged
rhaesung merged 6 commits intoSep 8, 2025
Merged
Conversation
use_lpt options can be properly used together.
…an66: a) As the current large horizontal momentum diffusivity (Kh) at large-scale and meso-scale (LSMS) looks too large, Kh is computed at zl and modified as Kh=Kq=0.4*elmh*sqrt(tke), elmh=min(1.5*sqrt(zlup*zldn,500), where zlup is parcel's upward travel length and zldn is parcel's downward travel length with tke momentum. b) Scale-aware non-local mass flux (xmf, xmfd) is now given as xmf=(1-sigma)^2 * (sigma*wu) rather than the current xmf=pfnl*c1*wu, where wu is updraft velocity, c1 is a constant, sigma is updraft fraction, and pfnl is partition function for nonlocal flux. The constant c1 is the updraft fraction in LSMS and it should be sigma in small scales as sigma becomes larger than c1 in small scales. Also, the scale-awareness parameter, (1-sigma)^2, is more physically based following Arakawa and Wu's study than the empirical parameter, pfnl. c) Refinement of scl (height of 50% of max tke): max tke can be occasionally found in Jet stream and then scl would be too large. In the update, we look for max tke below 2.5km height and then compute scl and limit to 2.5km (i.e., scl=min(max(scl,500),2500)) d) ri(gradient Richardson number) is computed as ri=bf/shr2 (1dtke) rather than ri=bf/(def_1+def_2), where bf is buoyancy, because the parameters given as a function of ri (such as Prandtl number) is derived based on ri=bf/shr2. e) TTE-EDMF (total turbulent energy based EDMF scheme) is combined into sa3dtke scheme as it shows slightly better GFS forecast skill than tke-based scheme. The logical parameter to conduct TTE-EDMF is 'tte_edmf'.
This was referenced Jul 19, 2025
Merged
Collaborator
|
@BinLiu-NOAA Please let us know when this is ready to be reviewed by removing the draft label when you're ready. |
BinLiu-NOAA
requested review from
JongilHan66,
Qingfu-Liu,
dustinswales,
grantfirl and
rhaesung
as code owners
JongilHan66
approved these changes
Jul 24, 2025
grantfirl
approved these changes
Jul 25, 2025
Collaborator
grantfirl
left a comment
grantfirl
left a comment
There was a problem hiding this comment.
Nice job. Looks good from a CCPP point-of-view, as long as @JongilHan66 and you are good with the science changes.
Qingfu-Liu
approved these changes
Jul 25, 2025
…o 1000m for the 3DTKE option.
BinLiu-NOAA
force-pushed
the
feature/3dtke_update
branch
from
1b4ce38 to
865a637
Compare
rhaesung
approved these changes
Jul 30, 2025
|
all tests are done ok at ufs-community/ufs-weather-model#2806. @rhaesung @grantfirl can you merge this pr? |
This was referenced Sep 17, 2025
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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
6 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 of Changes:
Update scale-aware 3DTKE EDMF (from @JongilHan66, @zhup01, @samuelkyfung) and introduce TTE-EDMF in GFS PBL scheme (from @JongilHan66).
Tests Conducted:
Tested with HAFS and GFS applications.
Dependencies:
Documentation:
Does this PR add new capabilities that need to be documented or require modifications to the existing documentation? If so, brief supporting material can be provided here. Contact the CODEOWNERS if your PR requires extensive updates to the documentation. See https://github.com/NCAR/ccpp-doc for Technical Documentation or https://dtcenter.org/community-code/common-community-physics-package-ccpp/documentation for the latest Scientific Documentation.
Issue (optional):
Contributors (optional):
If others have contributed to this work aside from the PR author, list them here
Updates/developments are mainly from @JongilHan66, @zhup01, @samuelkyfung