Mika Malila, University of Washington Seattle Campus, Civil and Environmental Engineering, Seattle, United States; University of Bergen, Geophysical Institute, Bergen, Norway, Jim Thomson, University of Washington, Seattle, WA, United States, Oyvind Breivik, Norwegian Meteorological Institute, Bergen, Norway, Brian Scanlon, National University of Ireland, Galway, Ireland, Brian Ward, National University of Ireland, Galway (NUIG), School of Physics, Galway, Ireland, Alvise Benetazzo, CNR-ISMAR, Italy and Filippo Bergamasco, DAIS, Università Ca’ Foscari, Venice, Italy