1. Department of Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410530, Israel
2. Nordita, Stockholm University and KTH Royal Institute of Technology, 10691 Stockholm, Sweden
3. Institute for Atmospheric and Earth System Research (INAR), University of Helsinki, 00014 Helsinki, Finland
4. Finnish Meteorological Institute, 00101 Helsinki, Finland