We thank R. Caballero, R. T. Pierrehumbert, and G. Walin for comments and discussions. We also thank two anonymous reviewers for their insightful comments and suggestions, which improved the presentation. The work reported here was supported by the Swedish Research Council and is a contribution from the Bert Bolin Climate Research Centre at Stockholm University. We acknowledge the modeling groups, the Program for Climate Model Diagnosis and Intercomparison (PCMDI) and the WCRP’s Working Group on Coupled Modelling (WGCM) for their roles in making the WCRP CMIP3 multimodel dataset available. Support of this dataset is provided by the Office of Science, U.S. Department of Energy.
Antonov, J. I., , R. A. Locarnini, , T. P. Boyer, , A. V. Mishonov, , and H. E. Garcia, 2006: Salinity. Vol. 2, World Ocean Atlas 2005, NOAA Atlas NESDIS 62, 182 pp.
Beranger, K., , L. Siefridt, , B. Barnier, , E. Garrnier, , and H. Roquet, 1999: Evaluation of operational ECMWF surface freshwater fluxes over oceans during 1991–1997. J. Mar. Syst., 22 , 477–493.
Czaja, A., , and J. Marshall, 2006: The partitioning of poleward heat transport between the atmosphere and ocean. J. Atmos. Sci., 63 , 1498–1511.
Dijkstra, H. A., , and W. Weijer, 2005: Stability of the global ocean circulation: Basic bifurcation diagrams. J. Phys. Oceanogr., 35 , 933–948.
Fedorov, A. V., , R. C. Pacanowski, , S. G. Philander, , and G. Boccaletti, 2004: The effect on salinity on the wind-driven circulation and the thermal structure of the upper ocean. J. Phys. Oceanogr., 34 , 1949–1966.
Fedorov, A. V., , P. S. Dekens, , M. McCarthy, , A. C. Ravelo, , P. B. deMenocal, , M. Barreiro, , R. C. Pacanowski, , and S. G. Philander, 2006: The pliocene paradox (mechanisms for a permanent El Niño). Science, 312 , 1485–1489.
Hazeleger, W., , R. Seager, , M. A. Cane, , and N. H. Naik, 2004: How can tropical Pacific Ocean heat transport vary? J. Phys. Oceanogr., 34 , 320–333.
Held, I. M., 2001: The partitioning of the poleward energy transport between the tropical ocean and atmosphere. J. Atmos. Sci., 58 , 943–948.
Lea, D. W., , D. K. Pak, , and H. J. Spero, 2000: Climate impact of late quaternary equatorial Pacific sea surface temperature variations. Science, 289 , 1719–1724.
McCreary, J. P., , and P. Lu, 1994: Interaction between the subtropical and equatorial ocean circulations: The subtropical cell. J. Phys. Oceanogr., 24 , 466–497.
Meijers, A. J., , N. L. Bindoff, , and J. L. Roberts, 2007: On the total, mean, and eddy heat and freshwater transport in the Southern Hemisphere of a ⅛° × ⅛° global ocean model. J. Phys. Oceanogr., 37 , 277–295.
Ou, H. W., 2007: Hydrological cycle and ocean stratification in a coupled climate system: A theoretical study. Tellus, 59A , 683–694.
Stommel, H. M., , and G. T. Csanady, 1980: A relation between the T-S curve and global heat and atmospheric water transport. J. Geophys. Res., 85 , C1,. 495–501.
Wijffels, S. E., , R. W. Schmitt, , H. L. Bryden, , and A. Stigebrandt, 1992: Transport of freshwater by the ocean. J. Phys. Oceanogr., 22 , 155–162.