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ABSTRACT CHLORINE-catalysed depletion of the stratospheric ozone layer has commanded considerable attention since 1985, when Farman _et al._1 observed a decrease of 50% in the total column

ozone over Antarctica in the austral spring. Here we examine the depletion of stratospheric ozone caused by the reaction of ozone with nitric oxide generated by energetic solar protons,

associated with solar flares. During large solar flares in March 1989, satellite observations indicated that total column ozone was depleted by ~9% over ~20% of the total area between the

South Pole and latitude 70° S. Chlorine-catalysed ozone depletion takes place over a much larger area, but our results indicate that the influence of solar protons on atmospheric ozone

concentrations should not be ignored. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through

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Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS SENSITIVITY OF STRATOSPHERIC OZONE TO THE LATITUDE, SEASON, AND HALOGEN CONTENT OF A CONTEMPORARY EXPLOSIVE

VOLCANIC ERUPTION Article Open access 20 April 2023 PHOTODISSOCIATION OF PARTICULATE NITRATE AS A SOURCE OF DAYTIME TROPOSPHERIC CL2 Article Open access 17 February 2022 THE TOBA

SUPERVOLCANO ERUPTION CAUSED SEVERE TROPICAL STRATOSPHERIC OZONE DEPLETION Article Open access 12 April 2021 REFERENCES * Farman, J. C. _et al._ _World Meteorological Organization_ Rep. No.

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AUTHORS AND AFFILIATIONS * Space Physics Research Institute, University of Natal, Durban, 4001, South Africa Judy A. E. Stephenson & Malcolm W. J. Scourfield Authors * Judy A. E.

Stephenson View author publications You can also search for this author inPubMed Google Scholar * Malcolm W. J. Scourfield View author publications You can also search for this author

inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Stephenson, J., Scourfield, M. Importance of energetic solar protons in ozone

depletion. _Nature_ 352, 137–139 (1991). https://doi.org/10.1038/352137a0 Download citation * Received: 20 December 1990 * Accepted: 28 May 1991 * Issue Date: 11 July 1991 * DOI:

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