Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, USA

Institute of Chemical Engineering and High Temperature Chemical Processes (ICE-HT), Foundation of Research and Technology (FORTH), Patra, Greece

Laboratory of Atmospheric Chemistry, Paul Scherrer Institut, Villigen, Switzerland

Laboratory of Atmospheric Chemistry, Paul Scherrer Institut, Villigen, Switzerland

Laboratory of Atmospheric Chemistry, Paul Scherrer Institut, Villigen, Switzerland

Institute of Chemical Engineering and High Temperature Chemical Processes (ICE-HT), Foundation of Research and Technology (FORTH), Patra, Greece

Environmental Chemical Processes Laboratory (ECPL), University of Crete, Heraklion, Greece

Department of Applied Physics, University of Eastern Finland, Kuopio, Finland

Finnish Meteorological Institute, Helsinki, Finland

Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, USA

Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, PA, USA

Institute of Chemical Engineering and High Temperature Chemical Processes (ICE-HT), Foundation of Research and Technology (FORTH), Patra, Greece