John Marshall

John Marshall is a Professor of Ocean and Climate Science at the Massachusetts Institute of Technology (MIT), affiliated with the Department of Earth, Atmospheric and Planetary Sciences. His research focuses on ocean dynamics, climate modeling, and the role of oceans in Earth's climate system.

• Key research areas: Ocean Circulation, Southern Ocean Dynamics, Eddy Processes, Climate Modeling
• Institutional affiliations: MIT-WHOI Joint Program, Program in Atmospheres, Oceans and Climate

Marshall's work combines mathematical modeling and numerical simulations to study interactions across scales—from convection to global circulation. His group developed the MITgcm model and participates in the CliMA collaboration with Caltech and NASA JPL. Notable contributions include theories of Antarctic Circumpolar Current dynamics, thermocline theory, and meridional overturning circulation.

Scientific recognition includes:

• A.G. Huntsman Award (2020)
• Bernhard Haurwitz Prize (2016)
• Sverdrup Gold Medal (2014)
• Fellowships: Royal Society (2008), American Meteorological Society (2014)