EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

The importance of atmospheric acidity for nutrient deposition on global scale

Maria Kanakidou1,2,3, Stelios Myriokefalitakis4, Athanasios Nenes3,5, and Nikos Daskalakis2
Maria Kanakidou et al.
  • 1Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, GR-70013 Heraklion, Greece (
  • 2Laboratory for Modelling of the Earth System, Institute of Environmental Physics, University of Bremen, Bremen, Germany
  • 3Center for Studies of Air Quality and Climate Change, Institute for Chemical Engineering Sciences, Foundation for Research and Technology Hellas, Patras, Greece
  • 4Institute for Environmental Research and Sustainable Development, National Observatory of Athens (NOA), GR-15236 Palea Penteli, Greece
  • 5Laboratory of Atmospheric Processes and their Impacts, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland

Atmospheric deposition can be an important source of nutrients and trace elements for land and ocean ecosystems. Atmospheric acidity is an important driver of the solubility of nutrients and trace elements present in atmospheric aerosols. Using a global 3-dimensional chemical transport model, we summarize here human driven past and future changes in the aerosol acidity and the resulting changes in the nitrogen, phosphorus and iron atmospheric deposition and solubility. We present and discuss the acidity driven changes in the chemical speciation and geographic patterns of nutrient deposition. Areas of uncertainties and implications for ecosystems functioning are discussed.

This work has been supported by the project “PANhellenic infrastructure for Atmospheric Composition and climatE change” (MIS 5021516) which is implemented under the Action “Reinforcement of the Research and Innovation Infrastructure”, funded by the Operational Programme "Competitiveness, Entrepreneurship and Innovation" (NSRF 2014-2020) and co-financed by Greece and the European Union (European Regional Development Fund) and by the University of Bremen Excellence Chair of MK.

How to cite: Kanakidou, M., Myriokefalitakis, S., Nenes, A., and Daskalakis, N.: The importance of atmospheric acidity for nutrient deposition on global scale, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-17843,, 2020


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