by Gabriele C. Hegerl (usa , Francis W. Zwiers (canada , Pascale Braconnot (france , Nathan P. Gillett (uk , Yong Luo (china , Jose A. Marengo Orsini (brazil , Neville Nicholls (australia , Joyce E. Penner (usa , Peter A. Stott (uk , David J. Karoly (usa , Laban Ogallo (kenya , Serge Planton (france