Numerical Investigation of the Impact of Physical Processes on Frontogenesis

摘要

A hydrostatic primitive equation mesoscale model is used to investigate theimpact of boundary layer processes on maritime frontogenesis. The model initialized in a highly baroclinically unstable state. As the baroclinic wave grows, frontogenesis takes place. In an effort to identify boundary layer processes important in frontogenesis, several different parameterization schemes have been incorporated into the model. An adiabatic and inviscid simulation with no boundary layer parameterization provides a control for these experiments. The parameterization schemes used include a simple bulk boundary layer (BL) scheme (not shown), a K-theory parameterization originally developed at the European Center for Medium Range Weather Forecasting, and a second-order closure scheme.