ASSIMILATION OF INSAT-3D SOUNDER RETRIEVED THERMODYNAMIC PROFILES USING WRF MODEL FOR EXTREME RAINFALL EVENT OVER NORTH CENTRAL PART OF INDIA

Abstract

The impact of Indian National Satellite-3D (INSAT-3D) retrieved thermodynamic profiles (temperature and humidity) on Weather Research Forecasting (WRF) model forecast is examined in this study.  The extreme rainfall event which occurred during July 25-26, 2015 over the North central part of India is taken as the case study.  The analysis obtained after assimilation is compared with the European Centre for Medium-Range Weather Forecasts (ECMWF) analysis.  Obtained results show quite good improvement in humidity and temperature analysis when compared with ECMWF analysis.  Positive improvements are observed in 24 h WRF model predicted rainfall on assimilation of INSAT-3D temperature and humidity profiles.