https://www.nature.com

Emissions – the ‘business as usual’ story is misleading

  • COMMENT
  • 29 January 2020

Stop using the worst-case scenario for climate warming as the most likely outcome — more-realistic baselines make for better policy.

By

  1. Zeke Hausfather 1. Zeke Hausfather is director of climate and energy at the Breakthrough Institute, Oakland, California, USA.
  2. Glen P. Peters 1. Glen P. Peters is research director at the CICERO Center for International Climate Research, Oslo, Norway.

A rainbow forms behind wind-farm windmills near rain-soaked Interstate 10, Palm Springs, California

Falling costs for generating clean electricity have led to a proliferation of wind farms, such as this one near Palm Springs, California. Credit: David McNew/Getty

More than a decade ago, climate scientists and energy modellers made a choice about how to describe the effects of emissions on Earth’s future climate. That choice has had unintended consequences which today are hotly debated. With the Sixth Assessment Report (AR6) from the Intergovernmental Panel on Climate Change (IPCC) moving into its final stages in 2020, there is now a rare opportunity to reboot.

Access options

Access Nature and 54 other Nature Portfolio journals

Get Nature+, our best-value online-access subscription

24,99 € / 30 days

cancel any time

Subscribe to this journal

Receive 51 print issues and online access

199,00 € per year

only 3,90 € per issue

Rent or buy this article

Prices vary by article type

from$1.95

to$39.95

Prices may be subject to local taxes which are calculated during checkout

Additional access options:

Nature 577, 618-620 (2020)

doi: https://doi.org/10.1038/d41586-020-00177-3

References

  1. Moss, R. H. et al. Nature 463, 747–756 (2010).

    Article PubMed Google Scholar

  2. Riahi, K. et al. Climat. Change 109, 33 (2011).

    Article Google Scholar

  3. van Vuuren, D. P. et al. Climat. Change 109, 5 (2011).

    Article Google Scholar

  4. Pörtner, H.-O. et al. (eds) IPCC Special Report on the Ocean and Cryosphere in a Changing Climate (IPCC, 2019).

    Google Scholar

  5. Ho, E., Budescu, D. V, Bosetti, V., van Vuuren, D. P. & Keller, K. Climat. Change 155, 545–561 (2019).

    Article Google Scholar

  6. Ritchie, J. & Dowlatabadi, H. Energy Econ. 65, 16–31 (2017).

    Article Google Scholar

  7. International Energy Agency. World Energy Outlook 2019 (IEA, 2019).

    Google Scholar

  8. Rogelj, J. et al. Nature 534, 631–639 (2016).

    Article PubMed Google Scholar

  9. Friedlingstein, P. et al. J. Clim. 27, 511–526 (2014).

    Article Google Scholar

  10. Lenton, T. M. et al. Nature 575, 592–595 (2019).

    Article PubMed Google Scholar

  11. Peters, G. P. et al. Nature Clim. Change 3, 4–6 (2013).

    Article Google Scholar

  12. O’Neill, B. C. et al. Geosci. Model Dev. 9, 3461–3482 (2016).

    Article Google Scholar

  13. Intergovernmental Panel on Climate Change. Global Warming of 1.5 °C (IPCC, 2018).

    Google Scholar

  14. Weber, C. et al. Nature Clim. Change 8, 845–848 (2018).

    Article Google Scholar

  15. United Nations Environment Programme. Emissions Gap Report 2018 (UN, 2019).

    Google Scholar

  16. King, D., Schrag, D., Dadi, Z., Ye, Q. & Ghosh, A. Climate Change: A Risk Assessment (Univ. Cambridge, 2015).

    Google Scholar

  17. Morgan, M. G. & Keith, D. W. Climat. Change 90, 189–215 (2008).

    Article Google Scholar

  18. Tàbara, J. D., St. Clair, A. L. & Hermansen, E. A. T. Environ. Sci. Pol. 70, 31–37 (2017).

    Article Google Scholar

  19. Riahi, K. et al. Glob. Environ. Change 42, 153–168 (2017).

    Article Google Scholar

  20. van Ruijven, B. J. Clim. Change 138, 361–367 (2016).

    Article Google Scholar

Download references

Related Articles

Subjects

Latest on: