1. Eawag, Surface Waters-Research and Management; Kastanienbaum Switzerland
2. Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich; Zurich Switzerland
3. Institute of Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht; Schleswig-Holstein Germany
4. Physics of Aquatic Systems Laboratory-Margaretha Kamprad Chair of Environmental Science and Limnology, ENAC, EPFL; Lausanne Switzerland
5. Applied Physics Institute, Irkutsk State University; Irkutsk Russia
6. Eawag, Surface Waters-Research and Management; Dübendorf Switzerland