Claire L Ryder, University of Reading, Reading, RG6, United Kingdom, Eleanor Highwood, University of Reading, Department of Meteorology, Reading, RG6, United Kingdom, Adrian Walser, Ludwig Maximilian University of Munich, Munich, Germany, Petra Seibert, BOKU University of Natural Resources and Life Sciences, Institute of Meteorology, Vienna, Austria, Anne Philipp, University of Vienna, Faculty of Physics, Vienna, Austria and Bernadett Weinzierl, Centreville, MD, United States