1. Shandong Provincial Key Laboratory of Optical Astronomy and Solar‐Terrestrial Environment, School of Space Science and Physics Shandong University Weihai China
2. State Key Laboratory of Space Weather, National Space Science Center Chinese Academy of Sciences Beijing China
3. School of Earth and Space Sciences Peking University Beijing China
4. Mullard Space Science Laboratory, Department of Space and Climate Physics University College London Dorking UK
5. Physics Department and Geophysical Institute University of Alaska Fairbanks Fairbanks AK USA