Using satellite data to examine the oceanographic processes over warm and cold core eddies in Bay of Bengal

The Bay of Bengal is home to a significant number of tropical cyclones. Tropical cyclones have been the major attention to the meteorological communities due to their varied socio-economic impacts. Recent studies have shown that tropical cyclones can feedback to the large-scale air-sea interactions. Since the Bay of Bengal is a part of the Indo-Pacific warm-pool region, small changes in the thermal structure of the Bay could alter the air-sea interactions. Because the Bay of Bengal is part of the Indo-Pacific warm pool zone, it is vulnerable to large-scale distant forcing from El Niño Southern Oscillation (ENSO) and other natural disasters. This study particularly deals with the impact of tropical cyclones (pre and post-monsoon seasons) on the Bay of Bengal. The role of mesoscale eddies in the intensity and movement of tropical cyclones has been studied in detail as case studies. Different satellite-based oceanographic observations are used in the analysis. The study concludes that distinct ocean processes have a relative role in impacting mixed layer temperature. It is examined distinct physical oceanographic parameters and conducted a thorough oceanic mixed layer heat budget analysis. Among which, for the warm case of warm-core eddies, pre-existing barrier layer plays a crucial role in impacting the mixed layer temperature.