A scale and aerosol aware stochastic convective parameterization for weather and air quality modeling

Abstract. A convective parameterization is described and evaluated that may be used in high resolution non-hydrostatic mesoscale models as well as in modeling system with unstructured varying grid resolutions and for convection aware simulations. This scheme is based on a stochastic approach originally implemented by Grell and Devenyi (2002). Two approaches are tested on resolutions ranging from 20 km to 5 km. One approach is based on spreading subsidence to neighboring grid points, the other one on a recently introduced method by Arakawa et al. (2011). Results from model intercomparisons, as well as verification with observations indicate that both the spreading of the subsidence and Arakawa's approach work…

• FD
  Fundação de Amparo à Pesquisa do Estado de São Paulo
• CN
  Conselho Nacional de Desenvolvimento Científico e Tecnológico