UPDATED LIST! 2025 AGU Meeting – GEOTRACES relevant sessions
Dear colleagues,
We would like to draw your attention to the following GEOTRACES relevant sessions at 2025 AGU Meeting (15-19 December in New Orleans, Louisiana).
The abstract submission deadline is Wednesday, 30 July 2025 (23:59 EDT/03:59 UTC).
Best regards,
GEOTRACES IPO
Session OS019 – Physical and Biogeochemical Processes on the Warm Antarctic Continental Shelves
The “warm” continental shelves of West Antarctica, which include the Amundsen and Bellingshausen seas and the West Antarctic Peninsula, are characterized by enhanced on-shelf transport of Circumpolar Deep Water that helps determine on-shelf hydrographic and biogeochemical properties. This warm water also interacts with ice shelves, influencing vertical mixing, overturning rates and ice shelf mass loss, and potentially triggering marine ice sheet instabilities. Warm shelf regions are undergoing rapid, climate-sensitive changes, which have important implications for ocean circulation, biological production and biogeochemical exchange over spatial scales that may extend downstream to the Ross Sea and offshore waters of the Antarctic Circumpolar Current. For this interdisciplinary session, we invite contributions that focus on both observational and modeling studies of ocean circulation, sea ice-ocean and ice shelf-ocean interactions, biogeochemical processes and biological production in Antarctic warm-shelf settings. We are especially interested in studies that explore links among these thematic topics.
Conveners:
Madeline Mamer (Georgia Institute of Technology, Student Convener)
Kiya Riverman (University of Portland)
Peter Sedwick (Old Dominion University)
Robert Sherrell (Rutgers University)
Andrew Thompson (Caltech)
Full session details are here: https://agu.confex.com/agu/agu25/prelim.cgi/Session/251441
Session B018 – Atmospheric Exchange of Aerosol and Gases Across the Air-Sea Interface
Aerosol and gas exchange across the air-sea interface integrates terrestrial, atmospheric, and marine processes within the Earth system. These interactions play a key role in modulating global carbon and nitrogen cycles, with flux variations significantly impacting biogeochemistry, climate, and society across diverse spatiotemporal scales. Anthropogenic activities and climate change are altering these fluxes rapidly, underscoring the need for a comprehensive, coupled understanding of elemental cycles within the Earth System. Topics of interest include, but not limited to: (1) Physical and chemical processes governing aerosol deposition and gas transfer across the sea surface; (2) Nutrient and contaminant exchange and their impacts on marine ecosystems; (3) Marine-derived emissions and feedbacks on regional and global climate, atmospheric chemistry, and cloud formation; (4) Past and future changes to aerosol and gas fluxes and impacts on global biogeochemical cycles or climate regulation; (5) Innovative observational methods, including autonomous platforms, remote sensing advancements, and modeling frameworks
Convenors:
Douglas Hamilton
Nicholas Meskhidze
Full session details are here: https://agu.confex.com/agu/agu25/prelim.cgi/Session/251484