1. Department of Atmospheric and Oceanic Sciences University of California Los Angeles CA USA
2. Department of Astronomy and Center for Space Physics Boston University Boston MA USA
3. Department of Electrical and Computer Engineering and Center for Space Physics Boston University Boston MA USA
4. Department of Earth, Planetary and Space Sciences University of California Los Angeles CA USA
5. Space Research Institute Austrian Academy of Sciences Graz Austria
6. Research Institute for Sustainable Humanosphere Kyoto University Kyoto Japan
7. School of Science and Engineering Merrimack College North Andover MA USA