1. Institut de Recherches sur la Catalyse et l’Environnement de Lyon (IRCELYON), CNRS, Université Lyon 1, 69626 Villeurbanne, France
2. Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
3. Atmospheric Composition Research, Finnish Meteorological Institute, 00101 Helsinki, Finland
4. Svalbard Integrated Arctic Earth Observing System, 9171 Longyearbyen, Norway
5. Division for Marine and Environmental Research, Ruđer Bošković Institute, Zagreb 10000, Croatia