This work was supported by the Innovative Program of Climate Change Projection for the 21st Century (“Kakushin” program) from MEXT, Japan.
Alexander, M. A., , I. Bladé, , M. Newman, , J. R. Lanzante, , N.-C. Lau, , and J. D. Scott, 2002: The atmospheric bridge: The influence of ENSO teleconnections on air–sea interaction over the global oceans. J. Climate, 15, 2205–2231.
An, S.-I., , and B. Wang, 2000: Interdecadal change of the structure of the ENSO mode and its impact on the ENSO frequency. J. Climate, 13, 2044–2055.
An, S.-I., , Y.-G. Ham, , J.-S. Kug, , F.-F. Jin, , and I.-S. Kang, 2005: El Niño–La Niña asymmetry in the Coupled Model Intercomparison Project simulations. J. Climate, 18, 2617–2627.
An, S.-I., , J.-S. Kug, , Y.-G. Ham, , and I.-S. Kang, 2008: Successive modulation of ENSO to the future greenhouse warming. J. Climate, 21, 3–21.
Annamalai, H., , S.-P. Xie, , J. P. McCreary, , and R. Murtugudde, 2005: Impact of Indian Ocean sea surface temperature on developing El Niño. J. Climate, 18, 302–319.
Annamalai, H., , S. Kida, , and J. Hafner, 2010: Potential impact of the tropical Indian Ocean Indonesian Seas on El Niño characteristics. J. Climate, 23, 3933–3952.
Boulanger, J.-P., , S. Cravatte, , and C. Menkes, 2003: Reflected and locally wind-forced interannual equatorial Kelvin waves in the western Pacific Ocean. J. Geophys. Res., 108, 3311, doi:10.1029/2002JC001760.
Capotondi, A., , A. Wittenberg, , and S. Masina, 2006: Spatial and temporal structure of tropical Pacific interannual variability in 20th century coupled simulations. Ocean Modell., 15, 274–298.
Choi, J., , S.-I. An, , J.-S. Kug, , and S.-W. Yeh, 2011: The role of mean state on changes in El Niño’s flavor. Climate Dyn., 37, 1205–1215.
Chowdary, J. S., , S.-P. Xie, , J.-J. Luo, , J. Hafner, , S. Behera, , Y. Masumoto, , and T. Yamagata, 2011: Predictability of Northwest Pacific climate during summer and the role of the tropical Indian Ocean. Climate Dyn., 36, 607–621.
Clarke, A. J., , and S. Van Gorder, 1999: The connection between the boreal spring Southern Oscillation persistence barrier and biennial variability. J. Climate, 12, 612–620.
Deser, C., and Coauthors, 2012: ENSO and Pacific decadal variability in Community Climate System Model version 4. J. Climate, 25, 2622–2651.
Hasumi, H., 2006: CCSR Ocean Component Model (COCO) version 4.0. CCSR Rep. 25, 111 pp. [Available online at http://www.ccsr.u-tokyo.ac.jp/~hasumi/COCO/coco4.pdf.]
Hasumi, H., , and S. Emori, Eds., 2004: K-1 coupled model (MIROC) description. K-1 Tech. Rep., 39 pp. [Available online at http://www.ccsr.u-tokyo.ac.jp/kyosei/hasumi/MIROC/tech-repo.pdf.]
Hoerling, M. P., , A. Kumar, , and M. Zhong, 1997: El Niño, La Niña, and the nonlinearity of their teleconnections. J. Climate, 10, 1769–1786.
Hoerling, M. P., , A. Kumar, , and T.-Y. Xu, 2001: Robustness of the nonlinear atmospheric response to opposite phases of ENSO. J. Climate, 14, 1277–1293.
Hong, C.-C., , T. Li, , L. Ho, , and Y.-C. Chen, 2010: Asymmetry of the Indian Ocean basinwide SST anomalies: Roles of ENSO and IOD. J. Climate, 23, 3563–3576.
Izumo, T., and Coauthors, 2010: Influence of the state of the Indian Ocean dipole on the following year’s El Niño. Nat. Geosci., 3, 168–172.
Jin, E. K., , and J. L. Kinter III, 2009: Characteristics of tropical Pacific SST predictability in coupled GCM forecasts using the NCEP CFS. Climate Dyn., 32, 675–691, doi:10.1007/s00382-008-0418-2.
Kang, I.-S., , and J.-S. Kug, 2002: El Niño and La Niña sea surface temperature anomalies: Asymmetry characteristics associated with their wind stress anomalies. J. Geophys. Res., 107, 4372, doi:10.1029/2001JD000393.
Klein, S. A., , B. J. Soden, , and N. C. Lau, 1999: Remote sea surface temperature variations during ENSO: Evidence for a tropical atmospheric bridge. J. Climate, 12, 917–932.
Kug, J.-S., , B. P. Kirtman, , and I.-S. Kang, 2006: Interactive feedback between ENSO and the Indian Ocean in an interactive coupled model. J. Climate, 19, 6371–6381.
Landsea, C. W., , and J. A. Knaff, 2000: How much skill was there in forecasting the very strong 1997/98 El Niño? Bull. Amer. Meteor. Soc., 81, 2107–2119.
Larkin, N. K., , and D. E. Harrison, 2002: ENSO warm (El Niño) and cold (La Niña) event life cycles: Ocean surface anomaly patterns, their symmetries, asymmetries, and implications. J. Climate, 15, 1118–1140.
Lau, N.-C., , and M. J. Nath, 2003: Atmosphere–ocean variations in the Indo-Pacific sector during ENSO episodes. J. Climate, 16, 3–20.
Liebmann, B., , and C. A. Smith, 1996: Description of a complete (interpolated) outgoing longwave radiation dataset. Bull. Amer. Meteor. Soc., 77, 1275–1277.
Luo, J.-J., , and T. Yamagata, 2001: Long-term El Niño-Southern Oscillation (ENSO)-like variation with special emphasis on the South Pacific. J. Geophys. Res., 106, 22 211–22 227.
Luo, J.-J., , R. Zhang, , S. K. Behera, , Y. Masumoto, , F.-F. Jin, , R. Lukas, , and T. Yamagata, 2010: Interaction between El Niño and extreme Indian Ocean dipole. J. Climate, 23, 726–742.
McPhaden, M. J., , and X. Zhang, 2009: Asymmetry in zonal phase propagation of ENSO sea surface temperature anomalies. Geophys. Res. Lett., 36, L13703, doi:10.1029/2009GL038774.
Ohba, M., , and H. Ueda, 2007: An impact of SST anomalies in the Indian Ocean in acceleration of the El Niño to La Niña transition. J. Meteor. Soc. Japan, 85, 335–348.
Ohba, M., , and H. Ueda, 2009a: Role of nonlinear atmospheric response to SST on the asymmetric transition process of ENSO. J. Climate, 22, 177–192.
Ohba, M., , and H. Ueda, 2009b: Seasonally different response of the Indian Ocean to the remote forcing of El Niño: Linking the dynamics and thermodynamics. SOLA, 5, 176–179, doi:10.2151/sola.2009-045.
Ohba, M., , D. Nohara, , and H. Ueda, 2010: Simulation of asymmetric ENSO transition in WCRP CMIP3 multimodel experiments. J. Climate, 23, 6051–6067.
Okumura, Y. M., , M. Ohba, , and C. Deser, 2011: A proposed mechanism for asymmetric duration of El Niño and La Niña. J. Climate, 24, 3822–3829.
Smith, T. M., , R. W. Reynolds, , T. C. Peterson, , and J. Lawrimore, 2008: Improvements to NOAA’s historical merged land–ocean surface temperature analysis (1880–2006). J. Climate, 21, 2283–2296.
Terao, T., , and T. Kubota, 2005: East-west SST contrast over the tropical oceans and the post El Niño western North Pacific summer monsoon. Geophys. Res. Lett., 32, L15706, doi:10.1029/2005GL023010.
Torrence, C., , and P. J. Webster, 1998: The annual cycle of persistence in the El Niño/Southern Oscillation. Quart. J. Roy. Meteor. Soc., 124, 1985–2004.
Ueda, H., , and R. Kawamura, 2004: Summertime anomalous warming over the midlatitude western North Pacific and its relationships to the modulation of the Asian monsoon. Int. J. Climatol., 24, 1109–1120.
Vecchi, G. A., , B. J. Soden, , A. T. Wittenberg, , I. M. Held, , A. Leetmaa, , and M. J. Harrison, 2006: Weaking of tropical Pacific atmospheric circulation due to anthropogenic forcing. Nature, 441, 73–76.
Wang, B., , R. Wu, , and X. Fu, 2000: Pacific–East Asia teleconnection: How does ENSO affect East Asian climate? J. Climate, 13, 1517–1536.
Watanabe, M., , and M. Kimoto, 2000: Atmosphere-ocean thermal coupling in the North Atlantic: A positive feedback. Quart. J. Roy. Meteor. Soc., 126, 3343–3369.
Watanabe, M., , and F.-F. Jin, 2002: Role of Indian Ocean warming in the development of the Philippine Sea anticyclone during El Niño. Geophys. Res. Lett., 29, 1478, doi:10.1029/2001GL014318.
Watanabe, M., , and F.-F. Jin, 2003: A moist linear baroclinic model: Coupled dynamical–convective response to El Niño. J. Climate, 16, 1121–1139.
Watanabe, M., and Coauthors, 2010: Improved climate simulation by MIROC5: Mean states, variability, and climate sensitivity. J. Climate, 23, 6312–6335.
Weisberg, R. H., , and C. Wang, 1997: Slow variability in the equatorial west-central Pacific in relation to ENSO. J. Climate, 10, 1998–2017.
Wu, R., , and B. Kirtman, 2004: Understanding the impacts of the Indian Ocean on ENSO variability in a coupled GCM. J. Climate, 17, 4019–4031.
Wu, R., , B. P. Kirtman, , and H. van den Dool, 2009: An analysis of ENSO prediction skill in the CFS retrospective forecasts. J. Climate, 22, 1801–1818.
Xie, S.-P., , H. Annamalai, , F. A. Schott, , and J. P. McCreary, 2002: Structure and mechanisms of south Indian Ocean climate variability. J. Climate, 15, 864–878.
Xie, S.-P., , K. Hu, , J. Hafner, , H. Tokinaga, , Y. Du, , G. Huang, , and T. Sampe, 2009: Indian Ocean capacitor effect on Indo–western Pacific climate during the summer following El Niño. J. Climate, 22, 730–747.
Xie, S.-P., , Y. Du, , G. Huang, , X.-T. Zheng, , H. Tokinaga, , K. Hu, , and Q. Liu, 2010: Decadal shift in El Niño influences on Indo–western Pacific and East Asian climate in the 1970s. J. Climate, 23, 3352–3368.
Yamanaka, G., , T. Yasuda, , Y. Fujii, , and S. Matsumoto, 2009: Rapid termination of the 2006 El Niño and its relation to the Indian Ocean. Geophys. Res. Lett., 36, L07702, doi:10.1029/2009GL037298.
Yu, J.-Y., 2005: Enhancement of ENSO’s persistence barrier by biennial variability in a coupled atmosphere-ocean general circulation model. Geophys. Res. Lett., 32, L13707, doi:10.1029/2005GL023406.
Yu, J.-Y., , C. R. Mechoso, , J. C. McWilliams, , and A. Arakawa, 2002: Impacts of the Indian Ocean on the ENSO cycle. Geophys. Res. Lett., 29, 1204, doi:10.1029/2001GL014098.
Yu, J.-Y., , F. Sun, , and H.-Y. Kao, 2009: Contributions of Indian Ocean and monsoon biases to the excessive biennial ENSO in CCSM3. J. Climate, 22, 1850–1858.