*Qing-He Zhang¹, Michael Lockwood², John C. Foster³, Qiu-Gang Zong⁴, Malcolm W. Dunlop⁵, Shun-Rong Zhang³, Brian Walsh⁶, Jøran Moen⁷, Bei-Chen Zhang⁸ (1.Institute of Space Sciences, Shandong University, Weihai, China, 2.Department of Meteorology, University of Reading, Earley Gate, Post Office Box 243, RG6 6BB, UK., 3.MIT Haystack Observatory, Westford, MA 01886, USA, 4.School of Earth and Space Sciences, Peking University, Beijing, China, 5.Space Sciences Division, SSTD, Rutherford Appleton Laboratory, Didcot, UK, 6.Mechanical Engineering Department and Center for Space Physics, Boston University, Boston, MA, USA., 7.Department of Physics, University of Oslo, Blindern, Oslo, Norway, 8.SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, China)