Jörn Callies

Jörn Callies is a Professor of Oceanography and Environmental Science at the California Institute of Technology (Caltech) and serves as the Graduate Option Representative for Environmental Science and Engineering. His research focuses on understanding ocean circulation and its role in Earth's climate regulation.

• Specialization: Physical oceanography, submesoscale dynamics, deep ocean turbulence
• Methods: in situ observations, satellite altimetry, numerical simulations

His work explores how submesoscale fronts and currents drive surface-interior ocean exchange, while deep ocean overturning circulation influences long-term climate cycles. Recent publications analyze sea surface height spectra, near-inertial wave dynamics, and seismic thermometry techniques. He mentors students in Caltech's Environmental Science and Engineering program and collaborates on postdoctoral fellowships.