This research effort was supported by NSF Grants ATM 9422507 and 9906460 to S. Nigam. Chul Chung’s doctoral research was supported, in part, by a NASA Graduate Student Fellowship in Global Change Research (Award NGT 30276). S. Nigam would like to thank Dave Randall and Maurice Blackmon for their encouragement and support of CCM3 diagnosis.
The authors would like to thank Ilana Stern of the data support group and the CCM3 consulting group at NCAR for help in accessing the ECMWF and CCM3 datasets. They would also like to thank Eric DeWeaver and Muthuvel Chelliah for facilitating access to some of the NCEP reanalysis datasets.
These research findings were presented at the Third Annual NCAR Climate System Model Workshop held in Breckenridge, Colorado (22–24 June 1998).
Boville, B. A., and P. R. Gent, 1998: The NCAR Climate System Model, version one. J. Climate,11, 1115–1130.
Chung, C., and S. Nigam, 1999: Asian summer monsoon–ENSO feedback on the Cane–Zebiak model ENSO. J. Climate,12, 2787– 2807.
Da Silva, A. M., C. C. Young, and S. Levitus, 1994: Algorithms and Procedures. Vol. 1, Atlas of Surface Marine Data 1994, NOAA Atlas NESDIS 6, NOAA, 83 pp.
Deser, C., and J. M. Wallace, 1990: Large-scale atmospheric circulation features of warm and cold episodes in the tropical Pacific. J. Climate,3, 1254–1281.
Held, I. M., S. W. Lyons, and S. Nigam, 1989: Transients and the extratropical response to El Niño. J. Atmos. Sci.,46, 163–174.
Hurrell, J. W., J. J. Hack, B. A. Boville, D. L. Williamson, and J. T. Kiehl, 1998: The dynamical simulation of the NCAR Community Climate Model version 3 (CCM3). J. Climate,11, 1207–1236.
Kalnay, E., and Coauthors, 1996: The NCEP/NCAR 40-Year Reanalysis Project. Bull. Amer. Meteor. Soc.,77, 437–471.
Meehl, G. A., and J. M. Arblaster, 1998: The Asian–Australian monsoon and El Niño–Southern Oscillation and the NCAR Climate System Model. J. Climate,11, 1356–1385.
Nigam, S., 1994: On the dynamical basis for the Asian summer monsoon rainfall–El Niño relationship. J. Climate,7, 1750– 1771.
——, 1997: The annual warm to cold phase transition in the eastern equatorial Pacific: Diagnosis of the role of stratus cloud-top cooling. J. Climate,10, 2447–2467.
——, and H.-S. Shen, 1993: Structure of oceanic and atmospheric low-frequency variability over the tropical Pacific and Indian Oceans. Part I: COADS observations. J. Climate,6, 657–676.
——, C. Chung, and E. DeWeaver, 2000: ENSO diabatic heating in ECMWF and NCEP reanalyses, and NCAR CCM3 simulation. J. Climate,13, 3152–3171.
Xie, P., and P. A. Arkin, 1997: Global precipitation: A 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs. Bull. Amer. Meteor. Soc.,78, 2539– 2558.
Zebiak, S. E., and M. A. Cane, 1987: A model El Niño–Southern Oscillation. Mon Wea. Rev.,115, 2262–2278.