Assimilation of INSAT-3D Satellite Data in WRF Model

摘要

The three-dimensional variational data assimilation system of the Weather Research and Forecasting (WRF) model is used in this study to assimilate the INSAT-3D temperature and specific humidity profiles over west coast of India, Mumbai, during 0000 UTC of 11-12 July 2016. The analysis obtained after assimilation is compared with the European Centre for Medium-Range Weather Forecasts (ECMWF) analysis. After ECMWF assimilation, the results of the rainfall predictions show improvement over the Indian region. Overall, the assimilation of INSAT-3D is compared with ECMWF analysis, which shows quite good improvement in temperature and humidity analysis. Positive improvements are noticed in 24-h WRF model-predicted rainfall on assimilation of INSAT-3D thermodynamic profiles over west coast of India, Mumbai.