1. National Institute of Polar Research; Tachikawa, Japan
2. Application Laboratory; Japan Agency for Marine-Earth Science and Technology; Yokohama, Japan
3. SOKENDAI (Graduate University for Advanced Studies); Hayama, Japan
4. Korea Polar Research Institute; Incheon, Korea
5. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam; Germany
6. Norwegian Polar Institute; Tromsø Norway