1. a Norwegian Meteorological Institute, Bergen, Norway
2. b Geophysical Institute, University of Bergen, Bergen, Norway
3. c Institute of Marine Sciences (ISMAR)–National Research Council (CNR), Venice, Italy
4. d Applied Physics Laboratory, University of Washington, Seattle, Washington
5. e AirSea Laboratory, Centre for Ocean Research and Exploration, Ryan Institute, National University of Ireland, Galway, Ireland