1. Department of Atmospheric and Oceanic Sciences University of California Los Angeles CA USA
2. Department of Earth, Planetary, and Space Sciences University of California Los Angeles CA USA
3. Center for Space Physics, Boston University Boston MA USA
4. Space Science Institute Moscow Russia
5. Department of Physics and Astronomy University of Iowa Iowa City IO USA
6. The Johns Hopkins University Applied Physics Laboratory Laurel MD USA
7. Southwest Research Institute San AntonioTX USA
8. Department of Physics and Astronomy University of Texas at San Antonio San AntonioTX USA
9. NASA Goddard Space Flight Center Greenbelt MD USA