Sensitivity of physical schemes on simulation of severe cyclones over Bay of Bengal using WRF-ARW model

Gauging appropriate physical parameterization schemes for any numerical weather prediction model is indispensable for obtaining high accuracy in tropical cyclone forecasting. In this study, combinations of five microphysics, three cumulus convection, and two planetary boundary layer (PBL) schemes are investigated with respect to track, intensity, and time of landfall to determine an optimal combination of physical schemes of the weather research and forecasting (WRF) model (version 4.0) with advanced research WRF (ARW) core. All sensitivity experiments are carried out by taking the initial and boundary conditionsfrom the National Centers for Environmental Prediction Global Forecast System (NCEP-GFS). The simulated track, intensity, and landfall time are compared with the Indian Meteorological Department (IMD) observations.