The book "Bay of Bengal Circulation and Temperature" is an in-depth study of the physical oceanography of the Bay of Bengal, which covers topics such as circulation, temperature, salinity, upwelling, coastal currents, and mixing. The book provides a comprehensive understanding of the Bay of Bengal's oceanographic processes, including its connection with the monsoon and the impact of eddies, tides, and cyclones on its circulation. The author covers the various physical processes that regulate the Bay of Bengal's temperature, including the role of air-sea interactions, freshwater flux, and heat transport. Additionally, the book provides a detailed analysis of the region's circulation patterns, including the western and eastern boundary currents, equatorial currents, and mesoscale variability. The book also discusses the impact of El Niño, Southern Oscillation, and Indian Ocean Dipole on the Bay of Bengal's oceanography. Furthermore, the author examines the role of remote sensing, numerical models, satellite observations, observational data, and data assimilation in the study of the Bay of Bengal. The book provides a comprehensive understanding of the Bay of Bengal's ocean dynamics, heat content, and sea level, and how they relate to global climate variability. The author discusses the significance of oceanographic expeditions in furthering our knowledge of the region's physical processes. Overall, this book is an essential reference for anyone interested in understanding the Bay of Bengal's oceanography and its impact on the wider Indian Ocean.