1. National Institute of Polar Research; Tachikawa Japan
2. SOKENDAI (The Graduate University for Advanced Studies); Tachikawa Japan
3. Department of Earth and Planetary Science; The University of Tokyo; Tokyo Japan
4. Department of Communications and Computer Engineering; Kyoto University; Kyoto Japan
5. Polar Environment Data Science Center, Joint Support-Center for Data Science Research; Research Organization of Information and Systems; Japan