Benoit Vanniere, University of Reading, Reading, RG6, United Kingdom, Pier Luigi Vidale, NCAS Climate, Department of Meteorology, University of Reading, Reading, United Kingdom, Malcolm J Roberts, Met Office Hadley center for Climate Change, Exeter, United Kingdom, Marie-Estelle Demory, ETH, Zurich, Switzerland, Kevin Hodges, University of Reading, Reading, United Kingdom and Omar Müller, University of Reading, Department of Meteorology, Reading, United Kingdom