Grell-Devenyi scheme

Grell-Devenyi is an ensemble-style cumulus parameterization option available in WRF.

The scheme samples multiple closure assumptions and trigger settings, then combines their tendencies to reduce dependence on a single convective formulation.

It is often used in sensitivity studies to test how robust regional precipitation signals are to convective parameterization uncertainty.

See also: Cumulus convection schemes, Grell 3D scheme, Grell-Freitas scheme