Department of Physics, University of Toronto, Toronto, Canada

Department of Chemistry, University of Waterloo, Waterloo, Canada

Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA

New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA

Department of Physics, University of Toronto, Toronto, Canada

Department of Physics, University of Toronto, Toronto, Canada

Department of Chemistry, University of Waterloo, Waterloo, Canada

Department of Chemistry, University of Waterloo, Waterloo, Canada

Department of Chemistry, University of York, York, UK

Columbus Technologies Inc., Pasadena, California, USA

Max Planck Institute for Chemistry, Air Chemistry, Mainz, Germany

Institute for Chemistry and Dynamics of the Geosphere 1: Stratosphere, Research Centre Jülich GmbH, Jülich, Germany