1. International Arctic Research Center and College of Natural Science and Mathematics, University of Alaska Fairbanks, 930 Koyukuk Drive, Fairbanks, AK 99775, USA.
2. International Arctic Research Center, University of Alaska Fairbanks, 930 Koyukuk Drive, Fairbanks, AK 99775, USA.
3. Polar Science Center, Applied Physics Laboratory, University of Washington, 1013 Northeast 40th Street, Seattle, WA 98105, USA.
4. Arctic and Antarctic Research Institute, 38 Bering Street, Saint Petersburg 199397, Russia.
5. Institute of Ocean Sciences, Fisheries and Oceans Canada, 9860 West Saanich Road, Sidney, BC, V8L 4B2, Canada.
6. Institute of Oceanology, Polish Academy of Sciences, Powstancow Warszawy 55, 81-712 Sopot, Poland.
7. International Arctic Research Center, University of Alaska Fairbanks, 930 Koyukuk Drive, Fairbanks, AK, 99775, USA.
8. Hydrometeorological Center of Russia, 11-13, B, Predtechensky Pereulok, Moscow, 123242, Russia.
9. Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Bussestraße 24, 27570 Bremerhaven, Germany.
10. Department of Physics and Electrical Engineering, Bremen University, Otto-Hahn Allee, 28334 Bremen, Germany.
11. Woods Hole Oceanographic Institution, 22 Water Street, Woods Hole, MA 02543, USA.
12. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive Pasadena, CA 91109, USA.
13. Norwegian Polar Institute, Fram Centre, N-9296 Tromsø, Norway.