1. Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany;
2. Scripps Institution of Oceanography, University of California San Diego, La Jolla, California;
3. Institut für Meereskunde, Universität Hamburg, Hamburg, Germany;
4. Dipartimento di Fisica, Università degli Studi di Torino, Torino, Italy;
5. Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden;
6. Department of Oceanography, Institute of Environmental Physics, University of Bremen, Bremen, Germany
7. Department of Hydraulic Engineering, Technical University of Delft, Delft, Netherlands;
8. Woods Hole Oceanographic Institution, Woods Hole, Massachusetts;