Carlo Buontempo¹, Jean-noel Thepaut², Cedric Bergeron², Anca Brookshaw³ and Copernicus Climate Change Service team, (1)European Centre for Medium-Range Weather Forecasts (ECMWF), Whitchurch Hill, GB-DEV, United Kingdom, (2)European Centre for Medium-Range Weather Forecasts, Copernicus, Reading, United Kingdom, (3)European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom