IRD), Paris, France, and Walker Institute, University of Reading, Reading, United Kingdom; WittenberG—GFDL, Princeton, New Jersey; Fedorov—Yale University, New Haven, Connecticut; Collins—Met Office, Hadley Centre, Exeter, United Kingdom; WanG—NOAA/AOML, Miami, Florida; Capotondi—University of Colorado, and NOAA, Boulder, Colorado; oldenborGh—KNMI, De Bilt, Netherlands; stoCkdale—ECMWF, Reading...