1. Department of Atmospheric and Oceanic Sciences University of California Los Angeles California USA
2. Department of Electrical and Computer Engineering and Center for Space Physics Boston University Boston Massachusetts USA
3. Department of Physics and Astronomy Rice University Houston Texas USA
4. Department of Physics and Astronomy University of California Los Angeles California USA
5. Department of Physics and Astronomy University of Calgary Calgary Alberta Canada
6. Department of Earth, Planets, and Space Sciences University of California Los Angeles California USA
7. Space Science Laboratory University of California Berkeley California USA