Katy Sheen, University of Exeter, Penryn, UNITED KINGDOM, Tobias Ehmen, University of Bergen, Bergen, Norway, Maria Esther Capo Truyols, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States, James C McWilliams, University of California, Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States and COSSMoSS project and field research team