1. State Key Laboratory of Space Weather, National Space Science CenterChinese Academy of Sciences Beijing China
2. College of Earth SciencesUniversity of Chinese Academy of Sciences Beijing China
3. Laboratory for Atmospheric and Space PhysicsUniversity of Colorado Boulder Boulder CO USA
4. Space Sciences LaboratoryUniversity of California Berkeley CA USA
5. Goddard Space Flight Center, NASA Greenbelt MD USA
6. Henan Engineering Laboratory for Big Data Statistical Analysis and Optimal Control, School of Mathematics and Information ScienceHenan Normal University Xinxiang China