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About

Shigeki Hosoda is a leading physical oceanographer whose work has fundamentally reshaped our understanding of the global ocean’s role in the climate system. His primary research focuses on ocean observation, climate variability, and the development of autonomous profiling float technology. Hosoda is a key figure behind the Argo program, an international array of nearly 4,000 robotic floats that has revolutionized oceanography. His landmark paper, “Argo—Two Decades: Global Oceanography, Revolutionized” (2021, 125 citations), synthesizes how this network has transformed our ability to monitor ocean temperature and salinity from the surface to 2,000 meters. More recently, Hosoda has pushed the frontier into the deep sea with “Observing the full ocean volume using Deep Argo floats” (2023, 24 citations), demonstrating how new floats can track warming and freshening in the abyssal ocean—critical for understanding Earth’s heat uptake. His contributions have been instrumental in revealing how the ocean absorbs excess heat from climate change, particularly in the dense waters near Antarctica. Hosoda’s work bridges cutting-edge technology and fundamental climate science, making him a pivotal figure in modern oceanography.