1. Department of Energy, Environmental, and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA.
2. Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, Canada.
3. Earth Sciences Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.
4. Goddard Earth Sciences Technology and Research, Universities Space Research Association, Greenbelt, MD 21046, USA.
5. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
6. Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD 20742, USA.