1. Department of Atmospheric ScienceColorado State University Fort Collins Colorado USA
2. Institut d'Astrophysique et de GéophysiqueUniversité de Liège, Quartier Agora Liège Belgium
3. Institute for Energy and Climate Research: TroposphereForschungszentrum Jülich Jülich Germany
4. School of Engineering and Applied ScienceHarvard University Cambridge Massachusetts USA
5. Institute of Arctic and Alpine ResearchUniversity of Colorado Boulder Boulder Colorado USA
6. Center for Atmospheric and Environmental ChemistryAerodyne Research Inc. Billerica Massachusetts USA
7. Department of ChemistryUniversity of California Irvine California USA
8. Institute of Meteorology and Climate Research (IMK‐ASF)Karlsruhe Institute of Technology Karlsruhe Germany
9. National Center for Atmospheric Research Boulder Colorado USA
10. Department of PhysicsUniversity of Toronto Toronto Ontario Canada