To investigate these hypotheses, this study will utilize a set of convection permitting Weather Research and Forecasting model (WRF) simulations. The control simulations will be analyzed using eddy kinetic energy (EKE) and potential vorticity (PV) budgets to assess where and how various processes are active. Next, by modifying a microphysics scheme to limit latent heating in the WRF simulations, sensitivity studies will allow for the examination of the structure, dynamics, and evolution of AEWs with limited latent heating, while maintaining as similar of an environment as possible to the control simulation.
Our preliminary results from a simulation of a single AEW show that the DRW mechanism generates PV in the low- and mid-levels of AEWs while the Rossby Wave mechanism is more important aloft. Further, by limiting the moisture in sensitivity studies, convection and diabatic effects were limited, and the AEW was increasingly limited to the upper levels with decreasing moisture. These results suggest that the AEW is very different without diabatic processes but they are not a requirement for the AEWs continued propagation and maintenance.