Dr. Satyaban Bishoyi Ratna is a Senior Scientist and Head of the Climate Applications and User Interface (CAUI) Division at the Office of Climate Research and Services, India Meteorological Department (IMD), Pune. He holds an M.Sc. in Oceanography, an M.Tech. in Atmospheric Sciences, and a Ph.D. in Meteorology. His research focuses on ocean–atmosphere interactions and climate variability across interannual to multidecadal timescales, including ENSO, IOD, MJO, and AMO, and their influence on the Asian monsoon.

Before joining IMD, Dr. Ratna held research positions at several leading international institutions. From 2010 to 2021, he worked at the Climatic Research Unit, University of East Anglia (UK); JAMSTEC (Japan); and CMCC (Italy), contributing to global climate research. At IMD, he is actively engaged in operational climate services such as seasonal forecasts, ENSO/IOD monitoring bulletins, sector-specific climate applications, and capacity building through training programs at the Regional Training Centre in Pune. He also continues his research on monsoon dynamics and extreme weather events, while guiding Ph.D. students and mentoring internship/project work.

Dr. Ratna currently serves on several international expert panels, including the WCRP's CLIVAR/GEWEX Monsoon Panel; CLIVAR Climate Dynamics Panel; WMO Task Team on National Framework for Climate Services (TT-NFCS), SAHF Working Group on Climate Services, CLIVAR Working Group on Pacific Atmospheric Teleconnections in a wArming Climate (PATAC), etc. Through these roles, he contributes to advancing international scientific collaboration on monsoon research, climate dynamics, and climate services for societal applications.

With a strong background in both research and operational climate applications, Dr. Ratna continues to contribute to improving scientific understanding of the monsoon system and strengthening climate services to support resilience and adaptation in India and beyond.

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