1. Department of Earth, Planetary and Space Sciences; University of California; Los Angeles California USA
2. Lockheed Martin ATC; Palo Alto California USA
3. NASA Goddard Space Flight Center; Greenbelt Maryland USA
4. Department of Physics and Astronomy; University of California; Los Angeles California USA
5. Applied Physics Laboratory; The John Hopkins University; Laurel Maryland USA
6. Space Research Institute; Austrian Academy of Sciences; Graz Austria
7. Department of Physics; University of New Hampshire; Durham New Hampshire USA
8. Department of Climate, Space Sciences and Engineering; University of Michigan; Ann Arbor Michigan USA