NUMERICAL MODELS | Parameterization of Physical Processes: Turbulence and Mixing

Abstract

The representation of subgrid turbulence in meteorological models for numerical weather prediction and climate is discussed. The following topics are addressed: (1) The importance of turbulence parametrization in large scale models; (2) the choice of conserved variables for mixing in the vertical; (3) the representation of surface fluxes in large scale models; (4) commonly used boundary layer formulations, namely, bulk schemes, local closure, profile formulations, and higher order models; and (5) the cloudy boundary layer.