1. Department of Earth, Planetary and Space Sciences and Institute of Geophysics and Planetary Physics; University of California; Los Angeles California USA
2. Laboratoire de Physique Atmosphérique et Planétaire; STAR Institute, Université de Liège; Liège Belgium
3. Department of Atmospheric and Oceanic Sciences; University of California; Los Angeles California USA
4. School of Earth and Space Sciences; Peking University; Beijing China