Assessment of Satellite-Derived Indicators of Extreme Rainfall

The extreme rainfall event in Patna, Bihar, was meticulously analysed using advanced satellite technology along with reanalysis data, observational data. Understanding critical indicators for extreme rainfall were identified by examining significant years resulted extreme rainfall like September 1997, August 2007, September 2013, and September 2019. The integration of ground-based IMD rainfall data refined the analysis, underscoring the importance of a comprehensive, multi-source data approach in heavy rainfall analysis. It has been found that Total Column Liquid Water, Cloud Top Height and Outgoing Longwave Radiation (OLR) are very good indicators of extreme rainfall and provide a deeper understanding of the atmospheric conditions related to clouds, radiation, and energy balance. At the same time, it became clear that CHIRPS provides a good estimate of precipitation, but still, due to the limitation of its spatial resolution, there exists a large difference in comparison to rain-gauge measured precipitation value.