1. Stefansson Arctic Institute, Akureyri, Iceland
2. University Centre of the Westfjords, Ísafjörður, Iceland
3. Swedish Meteorological and Hydrological Institute, Norrköping, Sweden
4. Federal Maritime and Hydrographic Agency (BSH), Hamburg, Germany
5. Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, Boulder, Colorado, USA