This work was supported by the Australian Greenhouse Office. The efforts of members of the Climate Modeling Program and the Atmospheric Processes Program at CSIRO Atmospheric Research in developing the model used in this study are gratefully acknowledged. We are grateful to A. Hirst for performing the coupled experiment and for reviewing our manuscript before submission. Comments from two reviewers and Dr. F. Zwiers also led to significant improvements.
Barsugli, J. J., and D. S. Battisti, 1998: The basic effects of atmospheric–ocean thermal coupling on midlatitude variability. J. Atmos. Sci., 55 , 477–493.
Berbery, E. H., and J. Nogues-Paegle, 1993: Intraseasonal fluctuations between the Tropics and extratropics in the Southern Hemisphere. J. Atmos. Sci., 50 , 1950–1965.
Bretherton, C. S., and D. S. Battisti, 2000: An interpretation of the result from atmospheric general circulation models forced by time history of the observed sea surface temperature distribution. Geophys. Res. Lett., 27 , 767–770.
Cai, W., and P. G. Baines, 2001: Forcing of the Antarctic Circumpolar Wave by ENSO teleconnections. J. Geophys. Res., 106 , 9019–9038.
Cai, W., P. G. Baines, and H. B. Gordon, 1999: Southern mid- to high-latitude variability, a zonal wavenumber 3 pattern, and the Antarctic Circumpolar Wave in the CSIRO coupled model. J. Climate, 12 , 3087–3104.
Deser, C., and M. L. Blackmon, 1995: On the relationship between tropical and North Pacific sea surface temperature variations. J. Climate, 8 , 1677–1680.
Farrara, J. D., M. Ghil, C. R. Mechoso, and K. C. Mo, 1989: Empirical orthogonal functions and multiple flow regimes in the Southern Hemisphere winter. J. Atmos. Sci., 46 , 3219–3223.
Frederiksen, C. S., and J. S. Frederiksen, 1996: A theoretical model of Australian northwest cloudband disturbances and Southern Hemisphere storm tracks: The role of SST anomalies. J. Atmos. Sci., 53 , 1410–1432.
Frederiksen, J. S., and P. J. Webster, 1988: Alternative theories of atmospheric teleconnections and low-frequency fluctuations. Rev. Geophys., 26 , 459–494.
Garreaud, R. D., and D. S. Battisti, 1999: Interannual (ENSO) and interdecadal (ENSO-like) variability in the Southern Hemisphere tropospheric circulation. J. Climate, 12 , 2113–2123.
Ghil, M., and K. Mo, 1991: Intraseasonal oscillations in the global atmosphere. Part II: Southern Hemisphere. J. Atmos. Sci., 48 , 780–790.
Gordon, H. B., and S. P. O'Farrell, 1997: Transient climate change in the CSIRO coupled model with dynamic sea ice. Mon. Wea. Rev., 125 , 875–907.
Graham, N. E., T. P. Barnett, R. Wilde, M. Ponater, and S. Schubert, 1994: On the roles of tropical and mid latitude SSTs in forcing interannual and interdecadal variability in the winter Northern Hemisphere circulation. J. Climate, 7 , 1416–1441.
Hirst, A. C., S. P. O'Farrell, and H. B. Gordon, 2000: Comparison of a coupled ocean–atmosphere model with and without oceanic eddy-induced advection. Part I: Ocean spinup and control integrations. J. Climate, 13 , 139–163.
Horel, J. D., and J. M. Wallace, 1981: Planetary-scale atmospheric phenomena associated with the Southern Oscillation. Mon. Wea. Rev., 109 , 813–829.
Hoskins, B. J., and D. J. Karoly, 1981: The steady linear response of a spherical atmosphere to thermal and orographic forcing. J. Atmos. Sci., 38 , 1179–1196.
Karoly, D., 1989: Southern Hemisphere circulation features associated with El Niño–Southern Oscillation events. J. Climate, 2 , 1239–1252.
Karoly, D., . 1990: The role of transient eddies in low-frequency zonal variations of the Southern Hemisphere circulation. Tellus, 42 , 41–50.
Karoly, D., . 1995: Observed variability of the Southern Hemisphere atmospheric circulation. Natural Climate Variability on Decadal-to-Century Time Scales, National Research Council, 111–118.
Karoly, D., R. A. Plumb, and M. Ting, 1989: Examples of the horizontal propagation of quasi-stationary waves. J. Atmos. Sci., 46 , 2802–2811.
Kidson, J. W., 1986: Index cycles in the Southern Hemisphere during the Global Weather Experiment. Mon. Wea. Rev., 114 , 1654–1663.
Kidson, J. W., and M. R. Sinclair, 1995: The influence of persistent anomalies on Southern Hemisphere storm tracks. J. Climate, 8 , 1938–1950.
Kiladis, G. N., and K. M. Weickmann, 1997: Horizontal structure and seasonality of large-scale circulation associated with submonthly tropical convection. Mon. Wea. Rev., 125 , 1997–2013.
Kiladis, G. N., and K. C. Mo, 1999: Interannual and intraseasonal variability in the Southern Hemisphere. Meteorology of the Southern Hemisphere, D. J. Karoly and D. G. Vincent, Eds., Amer. Meteor. Soc., 307–336.
Lau, N. C., 1997: Interactions between global SST anomalies and the midlatitude atmospheric circulation. Bull. Amer. Meteor. Soc., 78 , 21–33.
Lau, N. C., and J. Nath, 1994: A modeling study of the relative role of tropical and extratropical SST anomalies in the variability of the global atmosphere–ocean system. J. Climate, 7 , 1184–1200.
Mo, K. C., and H. van Loon, 1984: Some aspects of the interannual variation of mean monthly sea level pressure on Southern Hemisphere. J. Geophys. Res., 89 , 9541–9546.
Mo, K. C., and R. W. Higgins, 1997: Planetary waves in the Southern Hemisphere and linkages to the Tropics. Harry van Loon symposium, studies in climate, Part II. NCAR Tech. Note TN433+Proc., 290 pp.
Mo, K. C., and R. W. Higgins, . 1998: The Pacific–South American modes and the tropical convection during the Southern Hemisphere winter. Mon. Wea. Rev., 126 , 1581–1596.
North, G. R., T. L. Bell, and R. F. Cahalan, 1982: Sampling errors in the estimation of empirical orthogonal functions. Mon. Wea. Rev., 110 , 699–706.
Philander, S. G. H., 1990: El Niño, La Niña, and the Southern Oscillation. International Geophysics Series, Vol. 46, Academic Press, 289 pp.
Rodwell, M. J., D. P. Rowell, and C. K. Folland, 1999: Oceanic forcing of the wintertime North Atlantic and European climate. Nature, 398 , 320–323.
Rogers, J. C., and H. van Loon, 1982: Spatial variability of sea level pressure and 500 mb height anomalies over the Southern Hemisphere. Mon. Wea. Rev., 110 , 1375–1392.
Sardeshmukh, P. D., and B. J. Hoskins, 1988: The generation of global rotational flow by steady idealized tropical divergence. J. Atmos. Sci., 45 , 1228–1251.
Simmons, A. J., 1982: The forcing of stationary wave motion by tropical diabatic heating. Quart. J. Roy. Meteor. Soc., 108 , 503–534.
Thompson, D. W. J., and J. M. Wallace, 1998: The Arctic Oscillation signature in the wintertime geopotential height and temperature fields. Geophys. Res. Lett., 25 , 1297–1300.
Thompson, D. W. J., and J. M. Wallace, . 2000: Annular modes in the extratropical circulation. Part I: Month-to-month variability. J. Climate, 13 , 1000–1016.
Trenberth, K. E., 1979: Interannual variability of the 500 mb zonal-mean flow in the Southern Hemisphere. Mon. Wea. Rev., 107 , 1515–1524.
Trenberth, K. E., . 1981: Observed Southern Hemisphere eddy statistics at 500 mb: Frequency and spatial dependence. J. Atmos. Sci., 38 , 2585–2605.
Trenberth, K. E., and D. A. Paolino, 1981: Characteristic patterns of variability of sea level pressure in the Northern Hemisphere. Mon. Wea. Rev., 109 , 1169–1189.
Wallace, J. M., and D. S. Gutzler, 1981: Teleconnections in the geopotential height field during the Northern Hemisphere winter. Mon. Wea. Rev., 109 , 784–812.
Walland, D. J., S. B. Power, and A. C. Hirst, 2000: Decadal climate variability simulated in a coupled general circulation model. Climate Dyn., 16 , 201–211.
Watterson, I. G., 2000: Southern midlatitude zonal wind vacillation and its interaction with the ocean in GCM simulations. J. Climate, 13 , 562–578.
Watterson, I. G., . 2001: Zonal wind vacillation and its interaction with the ocean: Implication for interannual variability and predictability. J. Geophys. Res., 106 , 23965–23975.
Watterson, I. G., . 2002: Wave–mean flow feedback and the persistence of simulated zonal flow vacillation. J. Atmos. Sci., 59 , 1274–1288.
Yu, J-Y., and D. L. Hartmann, 1993: Zonal flow vacillation and eddy forcing in a simple GCM of the atmosphere. J. Atmos. Sci., 50 , 3244–3259.
Zhang, Y., J. M. Wallace, and N. Iwasaka, 1996: Is climate variability over the North Pacific a linear response to ENSO? J. Climate, 9 , 1468–1478.