Convective organization in evolving large-scale forcing represented by a highly truncated numerical archetype

The 20-day GATE Phase III period is taken as a major data source. The main advantage of the NAM-SCA parameterization is consistency with subgrid-scale dynamics as represented by the nonhydrostatic anelastic formulation.

The approach explicitly generates important dynamical structures of convection (e.g., mesoscale circulations, cold pools) spontaneously without further tuning or treatment as additional subcomponents. As with other convection parameterization, the numerical simulation of the precipitation rate, the apparent heat source, and the apparent moisture sink is straightforward and reasonably insensitive to the numerical procedures.