1. Solar-Terrestrial Environment Laboratory; Nagoya University; Nagoya Japan
2. National Institute of Polar Research; Research Organization of Information and Systems; Tokyo Japan
3. Department of Earth and Planetary Science, Graduate School of Science; University of Tokyo; Tokyo Japan
4. Institute of Space and Astronautical Science; Japan Aerospace Exploration Agency; Sagamihara Japan
5. Plasma and Space Science Center; National Cheng Kung University; Tainan Taiwan
6. Communication Systems; Lancaster University; Lancaster UK
7. Atmospheric Physics Laboratory; University College London; London UK
8. Finnish Meteorological Institute; Helsinki Finland