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Reflection on two Ambio papers by P. J. Crutzen on ozone in the upper atmosphere

This article belongs to Ambio’s 50th Anniversary Collection. Theme: Ozone Layer


We here reflect on two important articles on stratospheric ozone depletion written by P. J. Crutzen (1974) and P. J. Crutzen and D. H. Ehhalt (1977) in the early 1970s. These articles provide a clear description of the stratosphere and the most important chemical reactions involved in stratospheric ozone depletion. They present modeling results and provide recommendations for future research on stratospheric ozone depletion caused by chloro-fluoro-carbons, supersonic transport, nitrous oxide, and nuclear explosions. These two articles represent the beginning of a scientific era, which led to discovery of the Antarctic ozone hole and political action in the form of the Montreal Protocol and its amendments.

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  • Calvert, J.G. 1990. Glossary of atmospheric chemistry terms (recommendations 1990). Pure and Applied Chemistry 62: 2167–2219.

    CAS  Article  Google Scholar 

  • Chapman, S. 1929. A theory of upper atmospheric ozone. Memoirs of the Royal Meteorological Society 3: 103–125.

    Google Scholar 

  • Crutzen, P.J. 1970. The influence of nitrogen oxides on the atmospheric ozone content. Quarterly Journal of the Royal Meteorological Society 96: 320–325.

    Article  Google Scholar 

  • Crutzen, P.J. 1972. SST’s: A threat to the earth’s ozone shield. Ambio 1: 41–51.

    CAS  Google Scholar 

  • Crutzen, P.J. 1974. Estimates of possible variations in total ozone due to natural causes and human activities. Ambio 3: 201–210.

    CAS  Google Scholar 

  • Crutzen, P.J., and H.G. Brauch. 2016. Paul J. Crutzen: A Pioneer on Atmospheric Chemistry and Climate Change in the Anthropocene. SpringerBriefs on Pioneers in Science and Practice. Springer.

  • Crutzen, P.J., and D.H. Ehhalt. 1977. Effects of nitrogen fertilizers and combustion on the stratospheric ozone layer. Ambio 6: 112–117.

    CAS  Google Scholar 

  • Farman, J.C., B.G. Gardiner, and J.D. Shanklin. 1985. Large losses of total ozone in Antarctica reveal seasonal ClOx/NOx interaction. Nature 315: 207–210.

    CAS  Article  Google Scholar 

  • IPCC. 2014. Climate Change 2013—The Physical Science Basis. Cambridge: Cambridge University Press.

    Google Scholar 

  • Molina, M.J., and F.S. Rowland. 1974. Stratospheric sink for chlorofluoromethanes: Chlorine atom-catalysed destruction of ozone. Nature 249: 810–812.

    CAS  Article  Google Scholar 

  • Montreal, P. 1987. Montreal protocol on substances that deplete the ozone layer. Washington, DC: US Government Printing Office.

    Google Scholar 

  • Portmann, R.W., J.S. Daniel, and A.R. Ravishankara. 2012. Stratospheric ozone depletion due to nitrous oxide: influences of other gases. Philosophical Transactions of the Royal Society of London. Series B, Biological sciences 367: 1256–1264.

    CAS  Article  Google Scholar 

  • Ravishankara, A.R., J.S. Daniel, and R.W. Portmann. 2009. Nitrous oxide (N2O): The dominant ozone-depleting substance emitted in the 21st century. Science 326: 123–125.

    CAS  Article  Google Scholar 

  • Zeldovich, J. 1946. The oxidation of nitrogen in combustion and explosions. Acta Physicochimica URSS 21: 577–628.

    CAS  Google Scholar 

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Correspondence to Merete Bilde.

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Nielsen, O.J., Bilde, M. Reflection on two Ambio papers by P. J. Crutzen on ozone in the upper atmosphere. Ambio 50, 40–43 (2021).

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  • Chloro-fluoro-carbons
  • Nitrous oxide
  • Nuclear explosions
  • P. J. Crutzen
  • Stratospheric ozone depletion
  • Supersonic transport