Hugo Ulloa¹, Kraig B Winters², Alfred Wuest^1,3 and Damien Bouffard⁴, (1)Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland, (2)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (3)EAWAG Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland, (4)EAWAG Swiss Federal Institute of Aquatic Science and Technology, Department Surface Waters Research & Management, Kastanienbaum, Switzerland