December 19, 2025 U.S. GEOTRACES at AGU Fall Meeting 2025 15–19 December 2025 | New Orleans, LouisianaThe U.S. GEOTRACES community participated in the AGU Fall Meeting 2025 in New Orleans. GEOTRACES-relevant sessions included:OS019: Physical and Biogeochemical Processes on the Warm Antarctic Continental Shelves Conveners: Madeline Mamer (Georgia Institute of Technology), Kiya Riverman (University of Portland), Peter Sedwick (Old Dominion University), Robert Sherrell (Rutgers University), Andrew Thompson (Caltech)B018: Atmospheric Exchange of Aerosol and Gases Across the Air-Sea Interface Conveners: Douglas Hamilton, Nicholas Meskhidze