Sensitivity of Mesoscale Simulation of Aila Cyclone to the Parameterization of Physical Processes Using WRF Model

Abstract

Land falling tropical cyclones (TCs) that form over the Bay of Bengal (BoB) cause enormous damage to the life and property along the east coast of India, Bangladesh and Myanmar. The focal point in reducing TC disaster is to provide more accurate prediction of the track, intensity and landfall of the storm. A number of studies (Anthes, 1982; Davis et al., 2001) suggested that the numerical prediction of tropical cyclone depends on representation of various physical processes in the model. Mandal et al. (2004) studied the sensitivity of cumulus convection, planetary boundary layer (PBL) and radiation parameterization towards mesoscale simulation of BoB cyclones using fifth generation mesoscale model (MM5). Their study indicates that the model simulation is sensitive to the choice of cumulus convection, PBL and radiation parameterization schemes.