Air-sea fluxes of biogeochemically active constituents have significant impacts on global biogeochemistry and climate. Increasing atmospheric deposition of anthropogenically-derived nutrients (e.g., nitrogen, phosphorus, iron) to the ocean influences marine productivity and has associated impacts on oceanic CO2 uptake, and emissions to the atmosphere of climate active species (e.g., nitrous-oxide (N2O), dimethyl-sulfide (DMS), marine organic compounds and halogenated species). These oceanic emissions of reactive species and greenhouse gases influence atmospheric chemistry and global climate, and induce potentially important chemistry-climate feedbacks. While advances have been made by laboratory, field, and modelling studies over the past decade, we still lack understanding of many of the physical and biogeochemical processes linking atmospheric deposition, nutrient availability, marine biological productivity, and the biogeochemical cycles governing air-sea fluxes of these climate active species. Atmospheric inputs of other toxic substances, e.g., lead, cadmium, copper, and persistent organic pollutants, into the ocean are also of concern.
This session will address the atmospheric deposition of nutrients and toxic substances to the ocean, their impacts on ocean biogeochemistry, the air-sea fluxes of climate active species and potential feedbacks to climate. We welcome new findings from both measurement programmes and atmospheric and oceanic models.
This session is jointly sponsored by GESAMP Working Group 38 on ‘The Atmospheric Input of Chemicals to the Ocean’, the Surface Ocean-Lower Atmosphere Study (SOLAS) , and the International Commission on Atmospheric Chemistry and Global Pollution (ICACGP).

Co-sponsored by SOLAS and iCACGP
Convener: Parvadha Suntharalingam | Co-conveners: Robert Duce, Maria Cristina Facchini, Maria Kanakidou, Arvind Singh
| Attendance Mon, 08 Apr, 14:00–15:45
Hall X5

Attendance time: Monday, 8 April 2019, 14:00–15:45 | Hall X5

Chairperson: Parv Suntharalingam
X5.385 |
Stefan Barthel, Ralf Wolke, Ina Tegen, Nadja Triesch, Sebastian Zeppenfeld, Manuela van Pinxteren, and Hartmut Herrmann
Chairperson: Parv Suntharalingam
X5.386 |
Kalliopi Violaki, Cecile Militon, Philippe Guny, Lea Sylvi, Stephanie Jaquet, Aurélie Dufour, Maria Tsagaraki, Athanasios Nenes, Richard Sempéré, and Christos Panagiotopoulos
Chairperson: Parv Suntharalingam
X5.387 |
Yitzhak Jacobson, Alon Angert, and Yeala Shaked
Chairperson: Parv Suntharalingam
X5.388 |
Maria Kanakidou and Stelios Myriokefalitakis
Chairperson: Parv Suntharalingam
X5.389 |
| Highlight
Remi Losno, Alexie Heimburger, Antoine Cogez, Fabrice Monna, Zihan Qu, and Jacobo Salvador
Chairperson: Parv Suntharalingam
X5.390 |
Yangjunjie Xu, Rémi Losno, Céline Dessert, Fabrice Monna, Vincent Robert, Jessica Chane-Teng, and Marie Boye
Chairperson: Parv Suntharalingam
X5.391 |
| Highlight
David Loades, James Lee, Mingxi Yang, Thomas Bell, Frances Hopkins, Daniel Philips, Ryan Pound, Mat Evans, and Lucy Carpenter
Chairperson: Parv Suntharalingam
X5.392 |
Estimates of oceanic nitrous-oxide emissions for the 1980-2015 period
Parvadha Suntharalingam and Erik Buitenhuis
Chairperson: Parv Suntharalingam
X5.393 |
Johannes Fiedler, Clas Persson, and Stefan Buhmann