1. Department of Earth Sciences University of Western Ontario London Ontario Canada
2. Astrophysics Science Division NASA/Goddard Space Flight Center Greenbelt MD USA
3. Department of Physics and Astronomy Catholic University of America Washington DC USA
4. Department of Physics and Astronomy University of Western Ontario London Ontario Canada
5. Centre for Planetary Science and Exploration University of Western Ontario London Ontario Canada
6. Institute for Astronomy University of Hawai‘i at Mānoa Honolulu HI USA
7. Leibniz Institute of Atmospheric Physics University of Rostock Kühlungsborn Germany
8. Institute of Applied Physics University of Bern Bern Switzerland
9. Department of Physics University of California, San Diego La Jolla CA USA