1. Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
2. ESA European Space and Astronomy Center Madrid Spain
3. Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics, Chinese Academy of Sciences Beijing China
4. Southwest Research Institute San Antonio TX USA
5. University of Leicester Leicester UK
6. NASA Goddard Space Flight Center Greenbelt MD USA
7. Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
8. Princeton Plasma Physics Laboratory Princeton University Princeton NJ USA