1. Department of Physics Auburn University Auburn AL USA
2. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
3. Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece
4. Department of Physics University of Colorado Boulder Boulder CO USA
5. School of Earth and Space Exploration Arizona State University Tempe AZ USA
6. Department of Physics and Astronomy University of Iowa Iowa City IA USA
7. NASA Goddard Space Flight Center Greenbelt MD USA
8. Department of Physics and Astronomy West Virginia University Morgantown WV USA
9. National Center for Atmospheric Research High Altitude Observatory Boulder CO USA
10. School of Space and Environment Beihang University Beijing China
11. Space Science Institute Boulder CO USA