Add option in GFS TKE EDMF PBL scheme to use liquid/ice potential temperature in local mixing #2763
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…tion of GFS PBL scheme. (from @WeiguoWang-NOAA)
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jkbk2004
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Jun 30, 2025
…#2734; Add option in GFS PBL to use liquid/ice potential temperature in local mixing #2763; Update MOM6 to its main repo. 20250527 commit #2757; Mom6 025 warmstart option #2761 (#2734) * UFSWM - change to MOM6 namelist file * FV3 - * ccpp-physics - Bring in the scale-aware 3DTKE related changes for GFS TKE EDMF PBL scheme * ccpp-physics - Add a namelist option in GFS TKE EDMF PBL scheme to apply an approximate way to represent local mixing/diffusion process in T-equation using liquid/ice water potential temperature. * atmos_cubed_sphere - Enable the scale-aware 3DTKE capability for the GFS TKE EDMF PBL scheme * MOM6 - update MOM6 to its main repo. 20250527 commit (originally GFDL 20250423 candidate) --------- Co-authored-by: jiandewang <jiande.wang@noaa.gov> Co-authored-by: NeilBarton-NOAA <neil.barton@noaa.gov>
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Description:
This PR and its related PRs add a namelist option in GFS TKE EDMF PBL scheme to apply an approximate way to represent local mixing/diffusion process in T-equation using liquid/ice water potential temperature fluxes. This could potentially improve the mixing-length-theory-based parameterization of local diffusion processes in cloudy areas of tropical cyclones (TC). The UFS hurricane application (HAFS) group has conducted retrospective tests during the upgrade of operational HAFS version 2.1, showing this option has positive impacts on TC intensity and rapid intensification forecasts.
Note: A namelist option is added to control turning on/off (default is off) this application.
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Regression Test Changes (Please commit test_changes.list):
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