Surface exchange fluxes of mass over the global oceans have significant impacts on atmospheric composition, biogeochemistry and climate at regional to global scales. Atmospheric boundary layer processes mediate these fluxes. This session is intended to provide an interdisciplinary forum to bring together researchers working in the areas of meteorology, atmospheric chemistry, air quality, biogeochemistry, stable isotope research, oceanography, and climate over the global oceans, focusing on new research in a range of relevant topics. These include: air-sea fluxes of radiatively active trace gases (CO2, CH4, N2O, CO), regional emissions and transport of climate-relevant aerosols and their precursors (e.g., dimethyl sulfide [DMS], marine organic compounds, and halogenated species), atmospheric deposition of nutrients (e.g., nitrogen, phosphorus, and iron) and associated impacts on ocean biological systems, and biogeochemistry-climate feedback loops in the ocean-atmosphere system. Studies on characterization of these fluxes, their underlying control processes and how they may change in response to climate change in different scales are welcome.
The session has long-standing links to the Surface Ocean ̶ Lower Atmosphere Study (SOLAS) and GESAMP Working Group 38 on atmospheric input of chemicals to the ocean. We welcome submissions from all remit areas of these programs, and from a range of analysis approaches: field measurements, remote sensing, laboratory studies, and atmospheric and oceanic numerical models.
This year we particularly welcome contributions on the following specialist themes: The impacts of extreme events on air-sea gas exchange of climate-relevant compounds in marine systems. Studies addressing physical drivers such as marine heatwaves, storms and tropical cyclones, flooding events circulation anomalies, or changes in sea ice; biogeochemical drivers, like hypoxic or anoxic conditions and acidification pulses; biological drivers, like harmful algal blooms; or compound events. The role of anthropogenic activities in the production and air-sea exchange of gases, aerosols, pollutants in coastal regions (e.g. direct ship traffic emissions, indirect emissions caused by ship wakes, effects of wind parks, effluents from waste water treatment plants, and mariculture activities). Studies on these special topics may address impacts in all oceanic domains; e.g., open ocean, shelf waters, and shallow coastal ecosystems.