1. Institute for Atmospheric and Earth System Research/Physics Faculty of Science University of Helsinki Helsinki Finland
2. Laboratory of Environmental Physics Institute of Physics University of Tartu Tartu Estonia
3. Alfred‐Wegener‐Institut – Helmholtz‐Zentrum für Polar‐ und Meeresforschung Bremerhaven Germany
4. Univ Lyon Université Claude Bernard Lyon 1 Villeurbanne France
5. Laboratoire de Météorologie Physique Aubière France
6. Department of Chemistry, Biology and Biotechnology University of Perugia Perugia Italy
7. National Research Council Institute of Polar Sciences Bologna Italy
8. Department of Chemistry University of Florence Florence Italy
9. National Research Council Institute of Polar Sciences Montelibretti Italy
10. Department of Environmental Science iClimate Aarhus University Roskilde Denmark
11. Department of Environmental Science Stockholm University Stockholm Sweden
12. Bolin Centre for Climate Research Stockholm University Stockholm Sweden
13. Division of Environmental Science and Engineering Pohang University of Science and Technology Pohang Korea
14. Finnish Meteorological Institute Helsinki Finland
15. Atmospheric Chemistry Research Group North‐West University Potchefstroom South Africa
16. Beijing Advanced Innovation Center for Soft Matter Science and Engineering Aerosol and Haze Laboratory Beijing University of Chemical Technology Beijing China
17. Department of Atmospheric Chemistry and Climate Institute of Physical Chemistry Rocasolano CSIC Madrid Spain
18. Aerodyne Research Inc. Billerica MA USA
19. Joint International Research Laboratory of Atmospheric and Earth System Sciences Nanjing University Nanjing China