1. National Center for Atmospheric Research Atmospheric Chemistry Observations and Modeling Laboratory Boulder CO USA
2. Environmental Modeling Group Max Planck Institute for Meteorology Hamburg Germany
3. Laboratoire d’Aérologie Université de Toulouse CNRS UPS France
4. Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hong Kong China
5. Royal Belgian Institute for Space Aeronomy Brussels Belgium
6. Observatoire Midi‐Pyrénées Toulouse France
7. NOAA Chemical Sciences Laboratory/CIRES University of Colorado Boulder CO USA