Tatiana Ilyina¹, Hongmei Li¹, Aaron Spring¹, Pierre Friedlingstein², Nicole S Lovenduski³, Laurent Bopp⁴, Megumi O. Chikamoto⁵, John P Dunne⁶, Jong-Yeon Park⁷, Roland Séférian⁸ and Stephen G Yeager⁹, (1)Max Planck Institute for Meteorology, Hamburg, Germany, (2)University of Exeter, Exeter, United Kingdom, (3)University of Colorado, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States, (4)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (5)IPRC, University of Hawaii, Honolulu, HI, United States, (6)NOAA Geophys Fluid Dynamic, Princeton, United States, (7)Chonbuk National University, South Korea, (8)Meteo-France - CNRS, CNRM, CEN, Toulouse, France, (9)NCAR, Oceanography, Boulder, CO, United States