Author: Danny Leung
This is a scheme that builds upon a switch of CESM2's default dust emission scheme (Zender et al., 2003) to
@jfkok's more physical and less empirical one (Kok et al., 2014). This brings in additional modifications and add new aeolian
physics to the Kok's scheme, most notably, by adding the roughness effect (or called drag partition effect) which discounts surface
soil erosion by winds due to the presence of local-scale land-surface roughness elements (mostly plants and rocks). We use a hybrid
approach to account for both roughness from rocks (with a 2-D time-invariant dataset provided by Prigent et al., 2005; 2012) and
roughness from plants (time-varying, as a function of CLM's LAI). We further include the dust emission intermittency effects due to
boundary-layer turbulence.

Leung_2023 is default off for all compsets. Can be turned on by the user.