1. Department of Space Physics, School of Electronic InformationWuhan University Wuhan China
2. State Key Laboratory of Space WeatherChinese Academy of Sciences Beijing China
3. Department of Atmospheric and Oceanic SciencesUniversity of California Los Angeles California USA
4. Laboratory for Atmospheric and Space PhysicsUniversity of Colorado Boulder Boulder Colorado USA
5. NASA Goddard Space Flight Center Greenbelt Maryland USA
6. Institute for the Study of Earth, Oceans, and SpaceUniversity of New Hampshire Durham New Hampshire USA
7. Space Science and Applications GroupLos Alamos National Laboratory Los Alamos New Mexico USA