Abstract
The observed acceleration of outlet glaciers and ice flows in Greenland and Antarctica is closely linked to ocean warming, especially in the subsurface layer1,2,3,4,5. Accurate projections of ice-sheet dynamics and global sea-level rise therefore require information of future ocean warming in the vicinity of the large ice sheets. Here we use a set of 19 state-of-the-art climate models to quantify this ocean warming in the next two centuries. We find that in response to a mid-range increase in atmospheric greenhouse-gas concentrations, the subsurface oceans surrounding the two polar ice sheets at depths of 200–500 m warm substantially compared with the observed changes thus far6,7,8. Model projections suggest that over the course of the twenty-first century, the maximum ocean warming around Greenland will be almost double the global mean, with a magnitude of 1.7–2.0 °C. By contrast, ocean warming around Antarctica will be only about half as large as global mean warming, with a magnitude of 0.5–0.6 °C. A more detailed evaluation indicates that ocean warming is controlled by different mechanisms around Greenland and Antarctica. We conclude that projected subsurface ocean warming could drive significant increases in ice-mass loss, and heighten the risk of future large sea-level rise.
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References
Rignot, E. & Kanagaratnam, P. Changes in the velocity structure of the Greenland Ice Sheet. Science 311, 986–990 (2006).
Howat, I. M., Joughin, I. R. & Scambos, T. A. Rapid changes in ice discharge from Greenland outlet glaciers. Science 315, 1559–1561 (2007).
Holland, D. M., Thomas, R. H., De Young, B., Ribergaard, M. H. & Lyberth, B. Acceleration of Jakboshavn Isbræ triggered by warm subsurface ocean waters. Nature Geosci. 1, 659–664 (2008).
Straneo, F. et al. Rapid circulation of warm subtropical waters in a major glacial fjord in East Greenland. Nature Geosci. 3, 182–186 (2010).
Rignot, E., Koppes, M. & Velicogna, I. Rapid submarine melting of the calving faces of West Greenland glaciers. Nature Geosci. 3, 187–191 (2010).
Levitus, S., Antonov, J. & Boyer, T. Warming of the world ocean, 1955–2003. Geophys. Res. Lett. 32, L02604 (2005).
Shepherd, A., Wingham, D. & Rignot, E. Warm ocean is eroding West Antarctic Ice Sheet. Geophys. Res. Lett. 31, L23402 (2004).
Harrison, D. E. & Carson, M. Is the world ocean warming? Upper-ocean temperature trends: 1950–2000. J. Phys. Oceanogr. 37, 174–187 (2007).
Moon, T. & Joughin, I. Changes in ice front position on Greenland’s outlet glaciers from 1992 to 2007. J. Geophys. Res. 113, F02022 (2008).
Oppenheimer, M. Global warming and the stability of the West Antarctic Ice Sheet. Nature 393, 325–332 (1998).
Thomas, R. et al. Accelerated sea-level rise from west Antarctica. Science 306, 255–258 (2004).
Rignot, E. et al. Recent Antarctic ice mass loss from radar interferometry and regional climate modeling. Nature Geosci. 1, 106–110 (2008).
Huybrechts, P. & De Wolde, J. The dynamic response of the Greenland and Antarctic Ice Sheets to multiple-century climatic warming. J. Clim. 12, 2169–2188 (1999).
Gregory, J. M., Huybrechts, P. & Raper, S. C. B. Threatened loss of the Greenland ice-sheet. Nature 428, 616 (2004).
Ridley, J. K., Huybrechts, P., Gregory, J. M. & Lowe, J. A. Elimination of the Greenland ice sheet in a high CO2 climate. J. Clim. 17, 3409–3427 (2005).
Meehl, G. A. et al. in IPCC Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (ed. Solomon, S.) 747–845 (Cambridge Univ. Press, 2007).
Delworth, T. L. et al. GFDL’s CM2 global coupled climate models. Part I: Formulation and simulation characteristics. J. Clim. 19, 643–674 (2006).
Steele, M., Morley, R. & Ermold, W. PHC: A global ocean hydrography with a high quality Arctic Ocean. J. Clim. 14, 2079–2087 (2001).
Stouffer, R. J. et al. GFDL’s CM2 global coupled climate models. Part IV: Idealized climate response. J. Clim. 19, 723–740 (2006).
Manabe, S., Stouffer, R. J., Spelman, M. J. & Bryan, K. Transient responses of a coupled ocean–atmosphere model to gradual changes of atmospheric CO2. Part I. Annual mean response. J. Clim. 4, 785–818 (1991).
Gillett, N. P., Arora, V. K., Zickfeld, K., Marshall, S. J. & Merryfield, W. J. Ongoing climate change following a complete cessation of carbon dioxide emissions. Nature Geosci. 4, 83–87 (2011).
Weertman, J. Stability of the junction of an ice sheet and an ice shelf. J. Glaciol. 13, 3–11 (1974).
Kriegler, E., Hall, J. W., Held, H., Dawson, R. & Schellnhuber, H. J. Imprecise probability assessment of tipping points in the climate system. Proc. Natl Acad. Sci. USA. 106, 5041–5046 (2009).
Overpeck, J. T. et al. Paleoclimatic evidence for future ice-sheet instability and rapid sea-level rise. Science 311, 1747–1750 (2006).
Kopp, R. E., Simons, F. J., Mitrovica, J. X., Maloof, A. C. & Oppenheimer, M. Probabilistic assessment of sea level during the last interglacial stage. Nature 462, 863–867 (2009).
Fichefet, T. et al. Implications of changes in freshwater flux from the Greenland ice sheet for the climate of the 21st century. Geophys. Res. Lett. 30, 1911 (2003).
Mignot, J., Ganopolski, A. & Levermann, A. Atlantic subsurface temperatures: Response to a shutdown of the overturning circulation and consequences for its recovery. J. Clim. 20, 4884–4898 (2007).
Hu, A., Meehl, G. A., Han, W. & Yin, J. Transient response of the MOC and climate to potential melting of the Greenland Ice Sheet in the 21st century. Geophys. Res. Lett. 36, L10707 (2009).
Rasmussen, T. & Thomsen, E. The role of the North Atlantic drift in the millennial timescale glacial climate fluctuations. Palaeogeogr. Palaeoclimatol. Palaeoecol. 210, 101–116 (2004).
Flückiger, J., Knutti, R. & White, J. W. C. Oceanic processes as potential trigger and amplifying mechanisms for Heinrich events. Paleoceanography 21, PA2014 (2006).
Acknowledgements
We thank J. Gregory for constructive comments and many others at GFDL for carrying out the AR4/CMIP3 integrations. We also thank the Program for Climate Model Diagnosis and Intercomparison (PCMDI) for data archiving.
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J.Y. initiated the study, performed data analysis and led the writing of the paper. J.T.O. and J.L.R. contributed expertise on palaeoclimate, ocean circulation and ice-sheet melt. S.M.G. and R.J.S. contributed to the GFDL climate model experiments. A.H. contributed to the NCAR climate model experiments. All authors contributed to discussion, interpretation of the results and writing of the manuscript.
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Yin, J., Overpeck, J., Griffies, S. et al. Different magnitudes of projected subsurface ocean warming around Greenland and Antarctica. Nature Geosci 4, 524–528 (2011). https://doi.org/10.1038/ngeo1189
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DOI: https://doi.org/10.1038/ngeo1189
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