Laura Wilcox, University of Reading, National Centre for Atmospheric Science, Reading, United Kingdom, Nick J Dunstone, Met Office Hadley center for Climate Change, Exeter, United Kingdom, Stephen Thomson, University of Exeter, Exeter, United Kingdom, Massimo A Bollasina, University of Edinburgh, Edinburgh, EH9, United Kingdom, Eleanor Highwood, University of Reading, Department of Meteorology, Reading, RG6, United Kingdom, Wenmin Man, LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China and Lixia Zhang, Institite of Atmospheric Physics,Chinese Academy of Sciences, Beijing, China