Ongoing climate change following a complete cessation of carbon dioxide emissions

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A threat of irreversible damage should prompt action to mitigate climate change, according to the United Nations Framework Convention on Climate Change, which serves as a basis for international climate policy. CO2-induced climate change is known to be largely irreversible on timescales of many centuries1, as simulated global mean temperature remains approximately constant for such periods following a complete cessation of carbon dioxide emissions while thermosteric sea level continues to rise1,2,3,4,5,6. Here we use simulations with the Canadian Earth System Model to show that ongoing regional changes in temperature and precipitation are significant, following a complete cessation of carbon dioxide emissions in 2100, despite almost constant global mean temperatures. Moreover, our projections show warming at intermediate depths in the Southern Ocean that is many times larger by the year 3000 than that realized in 2100. We suggest that a warming of the intermediate-depth ocean around Antarctica at the scale simulated for the year 3000 could lead to the collapse of the West Antarctic Ice Sheet, which would be associated with a rise in sea level of several metres2,7,8.

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Figure 1: Carbon dioxide emissions and uptake by the atmosphere, land and ocean.
Figure 2: Time series of the climate response to a cessation of CO2 emissions.
Figure 3: Simulated patterns of surface temperature and precipitation change before and after a cessation of emissions.
Figure 4: Ocean temperature change before and after a cessation of emissions.


  1. 1

    Solomon, S., Plattner, G. K., Knutti, R. & Friedlingstein, P. Irreversible climate change due to carbon dioxide emissions. Proc. Natl Acad. Sci. USA 106, 1704–1709 (2009).

  2. 2

    Meehl, G. A. et al. in IPCC Climate Change 2007: The Physical Science Basis (eds Solomon, S. et al.) 747–845 (Cambridge Univ. Press, 2007).

  3. 3

    Matthews, H. D. & Caldeira, K. Stabilizing climate requires near-zero emissions. Geophys. Res. Lett. 35, L04705 (2008).

  4. 4

    Lowe, J. A. et al. How difficult is it to recover from dangerous levels of global warming? Environ. Res. Lett. 4, 014012 (2009).

  5. 5

    Frölicher, T. L. & Joos, F. Reversible and irreversible impacts of greenhouse gas emissions in multi-century projections with the NCAR global coupled carbon cycle-climate model. Clim. Dynam. 35, 1439–1459 (2010).

  6. 6

    Eby, M. et al. Lifetime of anthropogenic climate change: Millennial time scales of potential CO2 and surface temperature perturbations. J. Clim. 22, 2501–2511 (2009).

  7. 7

    Walker, D. P. et al. Oceanic heat transport onto the Amundsen Sea shelf through a submarine glacial trough. Geophys. Res. Lett. 34, L02602 (2007).

  8. 8

    Thomas, R. H., Sanderson, T. J. O. & Rose, K. E. Effect of climatic warming on the West Antarctic ice sheet. Nature 277, 355–358 (1979).

  9. 9

    Arora, V. K. et al. The effect of terrestrial photosynthesis down regulation on the twentieth-century carbon budget simulated with the CCCma earth system model. J. Clim. 22, 6066–6088 (2009).

  10. 10

    Danabasoglu, G. & Gent, P. R. Equilibrium climate sensitivity: Is it accurate to use a slab ocean model? J. Clim. 22, 2494–2499 (2009).

  11. 11

    Held, I. M. et al. Probing the fast and slow components of global warming by returning abruptly to preindustrial forcing. J. Clim. 23, 2418–2427 (2010).

  12. 12

    Allen, M. R. & Ingram, W. J. Constraints on future changes in climate and the hydrologic cycle. Nature 419, 224–232 (2002).

  13. 13

    Yang, F. L., Kumar, A., Schlesinger, M. E. & Wang, W. Q. Intensity of hydrological cycles in warmer climates. J. Clim. 16, 2419–2423 (2003).

  14. 14

    Rignot, E. & Jacobs, S. S. Rapid bottom melting widespread near Antarctic ice sheet grounding lines. Science 296, 2020–2023 (2002).

  15. 15

    Katz, R. F. & Worster, M. G. Stability of ice-sheet grounding lines. Proc. R. Soc. A 466, 1597–1620 (2010).

  16. 16

    Bamber, J. L., Riva, R. E. M., Vermeersen, B. L. A. & LeBrocq, A. M. Reassessment of the potential sea-level rise from a collapse of the West Antarctic ice sheet. Science 324, 901–903 (2009).

  17. 17

    Payne, A. J., Vieli, A., Shepherd, A. P., Wingham, D. J. & Rignot, E. Recent dramatic thinning of largest West Antarctic ice stream triggered by oceans. Geophys. Res. Lett. 31, L23401 (2004).

  18. 18

    Velicogna, I. Increasing rates of ice mass loss from the Greenland and Antarctic ice sheets revealed by GRACE. Geophys. Res. Lett. 36, L19503 (2009).

  19. 19

    Fyfe, J. C., Saenko, O. A., Zickfeld, K., Eby, M. & Weaver, A. J. The role of poleward-intensifying winds on Southern Ocean warming. J. Clim. 20, 5391–5400 (2007).

  20. 20

    Thoma, M., Jenkins, A., Holland, D. & Jacobs, S. Modelling circumpolar deep water intrusions on the Amundsen Sea continental shelf, Antarctica. Geophys. Res. Lett. 35, L18602 (2008).

  21. 21

    Morris, E. M. & Vaughan, D. G. in Antarctic Peninsula Climate Variability: Historical and Paleoenvironmental Perspectives (eds Domack, E. W. et al.) 61–68 (Antarctic Research Series, Vol. 79, American Geophysical Union, 2003).

  22. 22

    Vaughan, D. G. & Doake, C. S. M. Recent atmospheric warming and retreat of ice shelves on the Antarctic Peninsula. Nature 379, 328–331 (1996).

  23. 23

    Scambos, T. A., Hulbe, C., Fahnestock, M. & Bohlander, J. The link between climate warming and break-up of ice shelves in the Antarctic Peninsula. J. Glaciol. 46, 516–530 (2000).

  24. 24

    Blackstock, J. J. et al. Climate engineering responses to climate emergencies. Novim Preprint at (2009).

  25. 25

    Zahariev, K., Christian, J. R. & Denman, K. L. Preindustrial, historical, and fertilization simulations using a global ocean carbon model with new parameterizations of iron limitation, calcification, and N2 fixation. Prog. Oceanogr. 77, 56–82 (2008).

  26. 26

    Denman, K. L. & Peña, M. A. A coupled 1-D biological/physical model of the northeast subarctic Pacific Ocean with iron limitation. Deep-Sea Res II 46, 2877–2908 (1999).

  27. 27

    Arora, V. K. Simulating energy and carbon fluxes over winter wheat using coupled land surface and terrestrial ecosystem models. Agric. Forest Meteorol. 118, 21–47 (2003).

  28. 28

    Arora, V. K. & Boer, G. J. A parameterization of leaf phenology for the terrestrial ecosystem component of climate models. Glob. Change Biol. 11, 39–59 (2005).

  29. 29

    Marland, G., Boden, T. A. & Andres, R. J. in Trends: A Compendium of Data on Global Change. (Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, 2008).

  30. 30

    Arora, V. K. & Boer, G. J. Uncertainties in the 20th century carbon budget associated with land use change. Glob. Change Biol. 16, 3327–3348 (2010).

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We thank S. Solomon, C. Curry and G. Boer for their comments and advice on the manuscript. We thank W. Lee and D. Yang for assistance with processing model output.

Author information

N.P.G. designed the experiment, analysed model output, and wrote most of the paper. V.K.A. carried out the CanESM1 simulations, and wrote part of the Methods section. K.Z. contributed to the experimental design and analysis. S.J.M. contributed text and expertise on ice sheet implications. W.J.M. analysed ocean model output and contributed expertise on ocean changes.

Correspondence to Nathan P. Gillett.

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