alexa Evidence for large upward trends of ultraviolet-B radiation linked to ozone depletion.
Geology & Earth Science

Geology & Earth Science

Journal of Geology & Geophysics

Author(s): Kerr JB, McElroy CT

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Abstract Spectral measurements of ultraviolet-B radiation made at Toronto since 1989 indicate that the intensity of light at wavelengths near 300 nanometers has increased by 35 percent per year in winter and 7 percent per year in summer. The wavelength dependence of these trends indicates that the increase is caused by the downward trend in total ozone that was measured at Toronto during the same period. The trend at wavelengths between 320 and 325 nanometers is essentially zero. This article was published in Science and referenced in Journal of Geology & Geophysics

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