1. Department of Glaciology and Climate, Geological Survey of Denmark and Greenland, Copenhagen K, Denmark;
2. Department of Geoscience, Aarhus University, Aarhus, Denmark;
3. Division of Polar Ocean Environment, Korea Polar Research Institute, Incheon, Korea;
4. Environmental Change Research Unit (ECRU), Department of Environmental Sciences, University of Helsinki, Helsinki, Finland;
5. School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada;
6. Ifremer, LER BO, Station de Biologie Marine, Place de la Croix, Concarneau Cedex, France;
7. Université Pierre et Marie Curie-Paris, UMR-CNRS, Paris, France;
8. Department of Marine Ecology, Institute of Oceanology, Polish Academy of Sciences, Sopot, Poland