Performance evaluation of WRF model with different cumulus parameterizations in forecasting monsoon depressions
Ananda Das, Prabir Kumar Kundu, S. K. Roy Bhowmik, M. RATHEE
Abstract
Three monsoon depression events of 2011 have been simulated using WRF (ARW) model with five different cumulus parameterizations namely Betts-Miller-Janjic (BMJ), Kain-Fritsch (KF), Grell-3dimensional (G3D), Tiedtke (TDK) and new simplified Arakawa-Schubert (NSAS) schemes. The forecast skills of the model have been verified with observed TRMM-3B42 rainfall analysis. The validation of forecasts is conducted through two approaches. The standard categorical skill scores have used for grid-point by grid-point verification over India domain. The contiguous rain area (CRA) method, one of the object oriented verification techniques in recent times also has been applied for further analysis.