Benjamin Courtier, University of Reading, Reading, RG6, United Kingdom, Thorwald Hendrik Matthias Stein, University of Reading, Meteorology, Reading, RG6, United Kingdom, Jonathan Wilkinson, Met Office Hadley center for Climate Change, Exeter, United Kingdom, R.Giles Harrison, University of Reading, Reading, United Kingdom and Kirsty Hanley, MetOffice@Reading, Reading, United Kingdom