1. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder CO USA
2. Chemical Sciences Laboratory NOAA Earth System Research Laboratories Boulder CO USA
3. Royal Netherlands Meteorological Institute De Bilt The Netherlands
4. Department of Geoscience and Remote Sensing Delft University of Technology (TU Delft) Delft The Netherlands
5. Atmospheric Chemistry Observation & Modeling Laboratory National Center for Atmospheric Research Boulder CO USA
6. Department of Mechanical Engineering University of Colorado Boulder CO USA
7. Department of Chemistry University of Colorado Boulder CO USA