SOLAS Open Science Conference
Dates: 21-25 April 2019
Location: Sapporo, Japan
For further information: https://www.confmanager.com/main.cfm?cid=2778
GEOTRACES Special Session:
Atmospheric deposition of iron, ocean biogeochemistry and marine emission of biological aerosols
Conveners: Akinori Ito (JAMSTEC), William M. Landing (Florida State University) and Douglas S. Hamilton (Cornell University)
Atmospheric deposition of aerosols to the ocean has been suggested to modulate marine primary productivity. Marine organic material has been shown to be an important source of ice-nucleating particles (INP) in high-latitude environments, and hence impacts the atmospheric energy balance. Significant progress has been made in our understanding of atmospheric inputs of labile iron (Fe) from natural and anthropogenic sources to the surface oceans. However, there are still large uncertainties regarding the relative importance of different sources of aerosols, the effects of atmospheric aerosol deposition on bioavailable Fe concentrations in the ocean and on the marine organic material and its role as INP. The discussion in this session focuses on problems and challenges in laboratory experiments and field measurements to improve the representations of trace metal biogeochemistry in atmosphere and ocean models, in particular, the two-way movement of aerosol material across the boundary between the atmosphere and ocean.