In HAFS, horizontal and vertical turbulent mixing is parameterized separately in FV3 dynamic core and a one-dimensional module in CCPP, respectively. This method becomes problematic as model resolution increases to the gray zone where three-dimensional (3D) turbulent processes become important.
To remediate the problem, a 3D scale-aware (SA) turbulent kinetic energy (TKE) scheme applicable to the gray zone has been developed for the UFS models and implemented in HAFS.
In HAFS, horizontal and vertical turbulent mixing is parameterized separately in FV3 dynamic core and a one-dimensional module in CCPP, respectively. This method becomes problematic as model resolution increases to the gray zone where three-dimensional (3D) turbulent processes become important.
To remediate the problem, a 3D scale-aware (SA) turbulent kinetic energy (TKE) scheme applicable to the gray zone has been developed for the UFS models and implemented in HAFS.