The authors appreciate the comments on an earlier version of the manuscript made by Drs. Kemball-Cook, H. Annamalai, T. Yasunari, J. Chan, and an anonymous reviewer. This work is supported by NOAA OGP/Pacific Program.
An, S-I., , and B. Wang, 2000: Interdecadal changes in the structure of ENSO mode and their relation to changes of ENSO frequency. J. Climate, 13 , 2044–2055.
Annamalai, H., , J. M. Slingo, , K. R. Sperber, , and K. Hodges, 1999: The mean evolution and variability of the Asian summer monsoon: Comparison of ECMWF and NCEP–NCAR reanalyses. Mon. Wea. Rev, 127 , 1157–1186.
Chang, C-P., , Y. Zhang, , and T. Li, 2000: Interannual and interdecadal variations of the East Asian summer monsoon and tropical Pacific SSTs. Part I: Roles of the subtropical ridge. J. Climate, 13 , 4310–4325.
Chen, L-X., , M. Dong, , and Y-N. Shao, 1992: The characteristics of interannual variations on the East Asian monsoon. J. Meteor. Soc. Japan, 70 , 397–421.
Chen, T-C., , and J-H. Yoon, 2000: Interannual variation in Indochina summer monsoon rainfall: Possible mechanism. J. Climate, 13 , 1979–1986.
Clarke, A. J., , and L. Shu, 2000: Quasi-biennial winds in the far western equatorial Pacific phase-locking El Niño to the seasonal cycle. Geophys. Res. Lett, 27 , 771–774.
Clarke, A. J., , X. Liu, , and S. V. Gorder, 1998: Dynamics of the biennial oscillation in the equatorial Indian and far western Pacific Oceans. J. Climate, 11 , 987–1001.
Goswami, B. N., , V. Krishnamurthy, , and H. Annamalai, 1999: A broad-scale circulation index for the interannual variability of the Indian summer monsoon. Quart. J. Roy. Meteor. Soc, 125B , 611–633.
Guo, Q., , and J. Wang, 1988: A comparison of the summer precipitation in India with that in China (in Chinese). J. Trop. Meteor, 4 , 53–59.
Huang, R., , and Y. Wu, 1989: The influence of ENSO on the summer climate change in China and its mechanisms. Adv. Atmos. Sci, 6 , 21–32.
Jiang, N., , J. D. Neelin, , and M. Ghil, 1995: Quasi-quadrennial and quasi-biennial variability in the equatorial Pacific. Climate Dyn, 12 , 101–112.
Kripalani, R. H., , and S. V. Singh, 1993: Large-scale aspects of India–China summer monsoon rainfall. Adv. Atmos. Sci, 10 , 71–84.
Kripalani, R. H., , and A. Kulkarni, 1997a: Climatic impacts of El Niño/La Niña on the Indian monsoon: A new perspective. Weather, 52 , 39–46.
Kripalani, R. H., , and A. Kulkarni, 1997b: Rainfall variability over south-east Asia—Connections with Indian monsoon and ENSO extremes: New perspectives. Int. J. Climatol, 17 , 155–1168.
Krishnamurthy, V., , and B. N. Goswami, 2000: Indian monsoon–ENSO relationship on interdecadal timescale. J. Climate, 13 , 579–595.
Krishnamurti, T. N., , and H. N. Bhalme, 1976: Oscillations of a monsoon system. Part I: Observational aspects. J. Atmos. Sci, 33 , 1937–1954.
Kumar, K. K., , B. Rajagopalan, , and M. A. Cane, 1999: On the weakening relationship between the Indian monsoon and ENSO. Science, 284 , 2156–2159.
Lau, K-M., , and S. Yang, 1996: The Asian monsoon and predictability of the tropical ocean–atmosphere system. Quart. J. Roy. Meteor. Soc, 122 , 945–957.
Lau, K-M., , and H. Weng, 2001: Teleconnection linking summertime rainfall variability over North America and East Asia. CLIVAR Exch, 5 , 18–21.
Lau, K-M., , and H. T. Wu, 2001: Intrinsic coupled ocean–atmosphere modes of the Asian summer monsoon: A reassessment of monsoon–ENSO relationships. J. Climate, 14 , 2880–2895.
Lau, K-M., , K-M. Kim, , and S. Yang, 2000: Dynamical and boundary forcing characteristics of regional components of the Asian summer monsoon. J. Climate, 13 , 2461–2482.
Lau, N-C., , and M. Nath, 2000: Impact of ENSO on the variability of the Asian–Australian monsoons as simulated in GCM experiments. J. Climate, 13 , 4287–4309.
Liu, X., , and M. Yanai, 2001: Relationship between the Indian monsoon rainfall and the tropospheric temperature over the Eurasian continent. Quart. J. Roy. Meteor. Soc, 127 , 909–938.
Mooley, D. A., , and J. Shukla, 1987: Variability and forecasting of the summer monsoon rainfall over India. Monsoon Meteorology, C. P. Chang and T. N. Krishnamurti, Eds., Oxford University Press, 26–59.
Nitta, T., 1987: Convective activities in the tropical western Pacific and their impacts on the Northern Hemisphere summer circulation. J. Meteor. Soc. Japan, 65 , 165–171.
Nitta, T., , and S. Yamada, 1989: Recent warming of tropical sea surface temperature and its relationship to the Northern Hemisphere circulation. J. Meteor. Soc. Japan, 67 , 375–383.
Palmer, T. N., , C. Brankoviz, , P. Viterbo, , and M. J. Miller, 1992: Modelling interannual variations of summer monsoons. J. Climate, 5 , 399–417.
Parthasarathy, B., , K. R. Kumar, , and D. R. Kothawaie, 1992: Indian summer monsoon rainfall indices: 1871–1990. Meteor. Mag, 121 , 174–186.
Rasmusson, E. M., , and T. Carpenter, 1983: The relationship between eastern equatorial Pacific sea surface temperature and rainfall over India and Sri Lanka. Mon. Wea. Rev, 111 , 517–527.
Shen, S., , and K-M. Lau, 1995: Biennial oscillation associated with the East Asian summer monsoon and tropical sea surface temperatures. J. Meteor. Soc. Japan, 73 , 105–124.
Shukla, J., 1995: Predictability of the tropical atmosphere, the tropical oceans and TOGA. Proc. Int. Conf. on the Tropical Ocean Global Atmosphere (TOGA) Programme, Vol. 2, WCRP-91, Geneva, Switzerland, World Climate Research Programme, 725–730.
Shukla, J., , and D. A. Paolino, 1983: The Southern Oscillation and longrange forecasting of the summer monsoon rainfall over India. Mon. Wea. Rev, 111 , 1830–1837.
Soman, M. K., , and J. Slingo, 1997: Sensitivity of Asian summer monsoon to aspects of sea surface temperature in the tropical Pacific Ocean. Quart. J. Roy. Meteor. Soc, 123 , 309–336.
Tao, S., , and L. Chen, 1987: A review of recent research on the East Asian summer monsoon in China. Monsoon Meteorology, C.-P. Chang and T. N. Krishnamurti, Eds., Oxford University Press, 60–92.
Ting, M., , and H. Wang, 1997: Summertime U.S. precipitation variability and its relation to Pacific sea surface temperature. J. Climate, 10 , 1853–1873.
Tomita, T., , and T. Yasunari, 1996: Role of northeast winter monsoon on the biennial oscillation of the ENSO/monsoon system. J. Meteor. Soc. Japan, 74 , 399–413.
Trenberth, K. E., 1990: Recent observed interdecadal climate changes in the Northern Hemisphere. Bull. Amer. Meteor. Soc, 71 , 988–993.
Tziperman, E., , M. A. Cane, , and B. Blumenthal, 1998: Locking of El Niño peak time to the end of the calendar year in the delayed oscillator picture of ENSO. J. Climate, 11 , 2191–2203.
Walker, G. T., 1923: Correlation in seasonal variations of weather. VIII: A preliminary study of world weather. Mem. Indian Meteor. Dep, 24 , 75–131.
Walker, G. T., 1924: Correlation in seasonal variations of weather. IV: A further study of world weather. Mem. Indian Meteor. Dep, 24 , 275–332.
Wang, B., , R. Wu, , and R. Lukas, 1999: Roles of the western North Pacific wind variation in thermocline adjustment and ENSO phase transition. J. Meteor. Soc. Japan, 77 , 1–16.
Wang, B., , R. Wu, , and X. Fu, 2000: Pacific–East Asian teleconnection: How does ENSO affect East Asian climate? J. Climate, 13 , 1517–1536.
Webster, P. J., , and S. Yang, 1992: Monsoon and ENSO: Selectively interactive systems. Quart. J. Roy. Meteor. Soc, 118 , 877–926.
Webster, P. J., , V. O. Magaña, , T. N. Palmer, , R. A. Thomas, , M. Yanai, , and T. Yasunari, 1998: Monsoons: Processes, predictability, and the prospects for prediction. J. Geophys. Res, 103 , 14451–14510.
Weng, H., , K-M. Lau, , and Y-K. Xue, 1999: Multi-scale summer rainfall variability over China and its long-term link to global sea surface temperature variability. J. Meteor. Soc. Japan, 77 , 845–857.
Wu, R., , and B. Wang, 2000: Interannual variability of summer monsoon onset over the western North Pacific and the underlying processes. J. Climate, 13 , 2483–2501.
Xie, P., , and P. A. Arkin, 1997: Global precipitation: A 17-year monthly analysis based on gauge observations, satellite estimates, and numerical outputs. Bull. Amer. Meteor. Soc, 78 , 2539–2558.
Yanai, T., , and C. Li, 1994: Interannual variability of the Asian summer monsoon and its relationship with ENSO, Eurasian snow cover, and heating. Proc. Int. Conf. on Monsoon Variability and Prediction, Trieste, Italy, WMO, 27–34.
Yasunari, T., 1990: Impact of Indian monsoon on the coupled atmosphere–ocean systems in the tropical Pacific. Meteor. Atmos. Phys, 44 , 29–41.
Ye, D-Z., , and R-H. Huang, 1996: Study on the Regularity and Formation Reason of Drought and Flood in the Yangtze and Huaihe River Regions (in Chinese). Shandon Science and Technology Press, 387 pp.
Zhang, R., , A. Sumi, , and M. Kimoto, 1996: Impacts of El Niño on the East Asian monsoon: A diagnostic study of the '86/87 and '91/92 events. J. Meteor. Soc. Japan, 74 , 49–62.
Zhang, R., , A. Sumi, , and M. Kimoto, 1999: A diagnostic study of the impact of El Niño on the precipitation in China. Adv. Atmos. Sci, 16 , 229–241.