Joonsuk Kang, The University of Chicago, Department of the Geophysical Sciences, Chicago, United States, Mr. Rhidian Thomas, University of Oxford, Oxford, United Kingdom; University of Reading, National Centre for Atmospheric Science, Reading, United Kingdom, Tiffany Shaw, The University of Chicago, Chicago, United States, Nick J Dunstone, Met Office Hadley center for Climate Change, Exeter, United Kingdom, Sarah M Kang, Max Planck Institute for Meteorology, Hamburg, Germany, Isla Simpson, National Center for Atmospheric Research, CGD Laboratory, Boulder, United States, Tim Woollings, University of Oxford, Department of Physics, Oxford, United Kingdom and Yue Yu, Second Institute of Oceanography, State Oceanographic Administration of China, Hangzhou, China