1. Shandong Key Laboratory of Optical Astronomy and Solar‐Terrestrial Environment School of Space Science and Physics Institute of Space Sciences Shandong University Weihai China
2. Center for Space Physics Boston University Boston MA USA
3. Department of Earth, Planetary, and Space Sciences University of California Los Angeles CA USA
4. Department of Mathematics, Physics and Electrical Engineering Northumbria University Newcastle‐upon‐Tyne UK
5. Geophysical Institute University of Alaska Fairbanks Fairbanks AK USA