[1] Natl Inst Polar Res, Tachikawa, Tokyo 1908518, Japan
[2] Grad Univ Adv Studies SOKENDAI, Dept Polar Sci, Tachikawa, Tokyo 1908518, Japan
[3] Univ Tokyo, Dept Earth & Planetary Sci, Bunkyo Ku, Tokyo 1130003, Japan
[4] Nagoya Univ, Solar Terr Environm Lab, Chikusa Ku, Nagoya, Aichi 4648601, Japan
[5] Musashino Art Univ, Kodaira, Tokyo 1878505, Japan
[6] Japan Sci Fdn, Chiyoda Ku, Tokyo 1020091, Japan
[7] Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Kyoto 6110011, Japan
[8] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA
[9] KTH Royal Inst Technol, Sch Elect Engn, S-10044 Stockholm, Sweden
[10] Univ Southampton, Sch Phys & Astron, Southampton, Hants, England
[11] Finnish Meteorol Inst, FIN-00101 Helsinki, Finland