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An influence of solar spectral variations on radiative forcing of climate

Author

Listed:
  • Joanna D. Haigh

    (Blackett Laboratory, Imperial College London)

  • Ann R. Winning

    (Blackett Laboratory, Imperial College London)

  • Ralf Toumi

    (Blackett Laboratory, Imperial College London)

  • Jerald W. Harder

    (Laboratory for Atmospheric and Space Physics, University of Colorado)

Abstract

Solar spectrum variation and climate Current understanding suggests that radiative forcings over the course of an 11-year solar cycle are in phase with related influences on climate. Recent satellite data have revealed, however, that there seems to be a surprising spectral component to solar variability, at least in the declining phase of the current solar cycle: UV radiation decreases strongly while visible radiation increases. Joanna Haigh and colleagues now show that these spectral variations — when incorporated into a radiative-photochemical model — lead to decreases in ozone below 45 kilometres and increases above. As a consequence of the ozone changes, radiative forcing of surface climate is out of phase with solar activity. This finding, although based on a short record from a potentially anomalous solar cycle, suggests that a major revision to our current understanding of solar forcing of climate may be in order.

Suggested Citation

  • Joanna D. Haigh & Ann R. Winning & Ralf Toumi & Jerald W. Harder, 2010. "An influence of solar spectral variations on radiative forcing of climate," Nature, Nature, vol. 467(7316), pages 696-699, October.
    • Handle: RePEc:nat:nature:v:467:y:2010:i:7316:d:10.1038_nature09426
    DOI: 10.1038/nature09426
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    Cited by:

    1. Bas van Geel & Peter A. Ziegler, 2013. "Ipcc Underestimates the Sun's Role in Climate Change," Energy & Environment, , vol. 24(3-4), pages 431-453, June.
    2. Engwerda, J.C., 2012. "Prospects of Tools from Differential Games in the Study Of Macroeconomics of Climate Change," Discussion Paper 2012-045, Tilburg University, Center for Economic Research.
    3. Kinsey, Geoffrey S. & Riedel-Lyngskær, Nicholas C. & Miguel, Alonso-Abella & Boyd, Matthew & Braga, Marília & Shou, Chunhui & Cordero, Raul R. & Duck, Benjamin C. & Fell, Christopher J. & Feron, Sarah, 2022. "Impact of measured spectrum variation on solar photovoltaic efficiencies worldwide," Renewable Energy, Elsevier, vol. 196(C), pages 995-1016.

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