ISI Document Delivery No.: 497SP Times Cited: 252 Cited Reference Count: 28 Cited References: Alexander MA, 2002, J CLIMATE, V15, P2205, DOI 10.1175/1520-0442(2002)0152.0.CO;2 An SI, 2000, J CLIMATE, V13, P2044, DOI 10.1175/1520-0442(2000)0132.0.CO;2 An SI, 2004, J CLIMATE, V17, P2399, DOI 10.1175/1520-0442(2004)0172.0.CO;2 Ashok K, 2007, J GEOPHYS RES-OCEANS, V112, DOI 10.1029/2006JC003798 Barsugli JJ, 2002, J CLIMATE, V15, P3427, DOI 10.1175/1520-0442(2002)0152.0.CO;2 Bejarano L, 2008, J CLIMATE, V21, P3051, DOI 10.1175/2007JCLI1679.1 CAYAN DR, 1992, J PHYS OCEANOGR, V22, P859, DOI 10.1175/1520-0485(1992)0222.0.CO;2 Cobb K., 2003, NATURE, V424, P272 EFRON B, 1982, JACKKNIFE BOOTSTRAP, P1 Fedorov AV, 2000, SCIENCE, V288, P1997, DOI 10.1126/science.288.5473.1997 Hoerling MP, 2002, J CLIMATE, V15, P2184, DOI 10.1175/1520-0442(2002)0152.0.CO;2 KALNAY E, 1996, B AM METEOROL SOC, V77, P471 Kao HY, 2009, J CLIMATE, V22, P615, DOI 10.1175/2008JCLI2309.1 Kug JS, 2009, J CLIMATE, V22, P1499, DOI 10.1175/2008JCLI2624.1 Kumar KK, 2006, SCIENCE, V314, P115, DOI 10.1126/science.1131152 Larkin NK, 2005, GEOPHYS RES LETT, V32, DOI 10.1029/2005GL022738 Latif M, 1997, J CLIMATE, V10, P2221, DOI 10.1175/1520-0442(1997)0102.0.CO;2 Meehl GA, 2007, B AM METEOROL SOC, V88, P1383, DOI 10.1175/BAMS-88-9-1383 RASMUSSON EM, 1982, MON WEATHER REV, V110, P354, DOI 10.1175/1520-0493(1982)1102.0.CO;2 Smith TM, 2004, J CLIMATE, V17, P2466, DOI 10.1175/1520-0442(2004)0172.0.CO;2 Solomon S, 2007, CLIMATE CHANGE 2007: THE PHYSICAL SCIENCE BASIS, P19 Trenberth KE, 2001, J CLIMATE, V14, P1697, DOI 10.1175/1520-0442(2001)0142.0.CO;2 TRENBERTH KE, 1987, MON WEATHER REV, V115, P3078, DOI 10.1175/1520-0493(1987)1152.0.CO;2 Vecchi GA, 2006, NATURE, V441, P73, DOI 10.1038/nature04744 Wang G, 2007, J CLIMATE, V20, P4211, DOI 10.1175/JCLI4228.1 Weng HY, 2007, CLIM DYNAM, V29, P113, DOI 10.1007/s00382-007-0234-0 Weng HY, 2009, CLIM DYNAM, V32, P663, DOI 10.1007/s00382-008-0394-6 Xie PP, 1997, B AM METEOROL SOC, V78, P2539, DOI 10.1175/1520-0477(1997)0782.0.CO;2 Yeh, Sang-Wook Kug, Jong-Seong Dewitte, Boris Kwon, Min-Ho Kirtman, Ben P. Jin, Fei-Fei KUG, JONG-SEONG/A-8053-2013 KORDI [PE98401, PP00720]; PCCC project; ANR (Agence Nationale de la Recherche); NSF [ATM 060552, AMT 065145]; NOAA [GC01-229] We acknowledge the international modelling groups for providing their data and PCMDI and the IPCC Data Archive at LLNL/DOE for collecting, archiving and making the data readily available. S.-W. Y. and J.-S. K. are supported by KORDI ( grants PE98401, PP00720). B. D. benefited from funding from the PCCC project ( Peru Chile Climate Change) of the ANR (Agence Nationale de la Recherche). J.- S. K. and F.- F. J. are also supported by NSF grants ATM 060552 and AMT 065145 and NOAA grant GC01-229. 262 NATURE PUBLISHING GROUP LONDON NATURE