1. Institut de Recherches sur l’Environnement et la Catalyse de Lyon (IRCELYON), CNRS and Université Lyon 1, Villeurbanne 69626, France
2. Institute for Atmospheric and Climate Science, ETH Zürich, Universitätstrasse 16, 8092 Zürich, Switzerland
3. Department of Chemistry, KTH Royal Institute of Technology, Stockholm 114 28, Sweden