Abstract
El Niño/Southern Oscillation (ENSO) is a mode of natural variability that has considerable impacts on global climate and ecosystems1,2,3,4, through rainfall variability in the tropical Pacific and atmospheric teleconnections5. In response to global warming, ENSO-driven rainfall variability is projected to intensify over the central-eastern Pacific but weaken over the western Pacific, whereas ENSO-related sea surface temperature variability is projected to decrease6,7,8,9,10,11,12,13,14. Here, we explore the mechanisms that lead to changes in ENSO-driven rainfall variability in the tropical Pacific in response to global warming, with the help of a moisture budget decomposition for simulations from eighteen state-of-the-art climate models15. We identify two opposing mechanisms that approximately offset each other: the increase in mean-state moisture content associated with surface warming strengthens ENSO-related rainfall anomalies7, whereas the projected reduction in ENSO-related variability of sea surface temperatures suppresses rainfall. Two additional effects—spatially non-uniform changes in background sea surface temperatures and structural changes in sea surface temperature related to ENSO—both enhance central-eastern Pacific rainfall variability while dampening variability in the western Pacific, in nearly equal amounts. Our decomposition method may be generalized to investigate how rainfall variability would change owing to nonlinear interactions between background sea surface temperatures and their variability.
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References
Philander, S. G. El Niño, La Niña, and the Southern Oscillation (Academic, 1990).
Neelin, J. et al. ENSO theory. J. Geophys. Res. 103, 14261–14290 (1998).
McPhaden, M. J., Zebiak, S. E. & Glantz, M. H. ENSO as an integrating concept in Earth science. Science 314, 1740–1745 (2006).
Deser, C., Alexander, M. A., Xie, S.-P. & Phillips, A. S. Sea surface temperature variability: Patterns and mechanisms. Annu. Rev. Mar. Sci. 2, 115–143 (2010).
Alexander, M. A. et al. The atmospheric bridge: The influence of ENSO teleconnections on air–sea interaction over the global oceans. J. Clim. 15, 2205–2231 (2002).
Collins, M. et al. The impact of global warming on the tropical Pacific Ocean and El Niño. Nature Geosci. 3, 391–397 (2010).
Power, S., Delage, F., Chung, C., Kociuba, G. & Keay, K. Robust twenty-first-century projections of El Niño and related precipitation variability. Nature 502, 541–545 (2013).
Cai, W. et al. Increasing frequency of extreme El Niño events due to greenhouse warming. Nature Clim. Change 4, 111–116 (2014).
Zhou, Z.-Q., Xie, S.-P., Zheng, X.-T., Liu, Q. & Wang, H. Global warming-induced changes in El Niño teleconnections over the North Pacific and North America. J. Clim. 27, 9050–9064 (2014).
Meehl, G. A. & Teng, H. Multi-model changes in El Niño teleconnections over North America in a future warmer climate. Clim. Dynam. 29, 779–790 (2007).
Cai, W. et al. Increased frequency of extreme La Niña events under greenhouse warming. Nature Clim. Change 5, 132–137 (2015).
Chung, C. T. Y. & Power, S. B. Precipitation response to La Niña and global warming in the Indo-Pacific. Clim. Dynam. 43, 3293–3307 (2014).
Chung, C. T. Y., Power, S. B., Arblaster, J. M., Rashid, H. A. & Roff, G. L. Nonlinear precipitation response to El Niño and global warming in the Indo-Pacific. Clim. Dynam. 42, 1837–1856 (2014).
Cai, W. et al. ENSO and greenhouse warming. Nature Clim. Change 5, 849–859 (2015).
Taylor, K. E., Stouffer, R. J. & Meehl, G. A. An overview of CMIP5 and the experiment design. Bull. Am. Meteorol. Soc. 93, 485–498 (2012).
Meehl, G. A. et al. in Climate Change 2007: The Physical Science Basis (eds Solomon, S. et al.) Ch. 10, 747–845 (Global Climate Projections, Cambridge Univ. Press, 2007).
Yeh, S. et al. El Niño in a changing climate. Nature 461, 511–514 (2009).
Christensen, J. H. et al. in Climate Change 2013: The Physical Science Basis (eds Stocker, T. F. et al.) 1217–1308 (IPCC, Cambridge Univ. Press, 2013).
Graham, N. & Barnett, T. P. Observations of sea surface temperature and convection over tropical oceans. Science 238, 657–659 (1987).
Johnson, N. C. & Xie, S.-P. Changes in the sea surface temperature threshold for tropical convection. Nature Geosci. 3, 842–845 (2010).
Held, I. M. & Soden, B. J. Robust responses of the hydrological cycle to global warming. J. Clim. 19, 5686–5699 (2006).
Chou, C., Neelin, J. D., Chen, C. & Tu, J. Evaluating the “rich-get-richer” mechanism in tropical precipitation change under global warming. J. Clim. 22, 1982–2005 (2009).
Huang, P., Xie, S.-P., Hu, K., Huang, G. & Huang, R. Patterns of the seasonal response of tropical rainfall to global warming. Nature Geosci. 6, 357–361 (2013).
Seager, R., Naik, N. & Vecchi, G. A. Thermodynamic and dynamic mechanisms for large-scale changes in the hydrological cycle in response to global warming. J. Clim. 23, 4651–4668 (2010).
Vecchi, G. A. & Soden, B. J. Global warming and the weakening of the tropical circulation. J. Clim. 20, 4316–4340 (2007).
Huang, P. Regional response of annual-mean tropical rainfall to global warming. Atmos. Sci. Lett. 15, 103–109 (2014).
Seager, R., Naik, N. & Vogel, L. Does global warming cause intensified interannual hydroclimate variability? J. Clim. 25, 3355–3372 (2012).
Liu, Z., Vavrus, S., He, F., Wen, N. & Zhong, Y. Rethinking tropical ocean response to global warming: The enhanced equatorial warming. J. Clim. 18, 4684–4700 (2005).
Xie, S.-P. et al. Global warming pattern formation: Sea surface temperature and rainfall. J. Clim. 23, 966–986 (2010).
Huang, P. & Ying, J. A multimodel ensemble pattern regression method to correct the tropical Pacific SST change patterns under global warming. J. Clim. 28, 4706–4723 (2015).
Bretherton, C. S., Smith, C. & Wallace, J. M. An intercomparison of methods for finding coupled patterns in climate data. J. Clim. 5, 541–560 (1992).
Acknowledgements
The work was supported by the National Basic Research Program of China (2012CB955604 and 2014CB953904), the Natural Science Foundation of China (41461164005), and the US National Science Foundation.
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P.H. conceived the study, performed the analyses, built the mechanism and wrote the paper. S.-P.X. contributed to improving the paper.
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Huang, P., Xie, SP. Mechanisms of change in ENSO-induced tropical Pacific rainfall variability in a warming climate. Nature Geosci 8, 922–926 (2015). https://doi.org/10.1038/ngeo2571
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DOI: https://doi.org/10.1038/ngeo2571
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