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Fluorocarbons and the stratosphere

OCT 01, 1975
Observations and experiments are under way in response to the growing concern that widely used fluorocarbons might cause a depletion in Earth’s protective ozone layer.

When the alarm was sounded last year that the ubiquitous fluorocarbon‐propelled spray cans might be responsible for slowly removing Earth’s protective ozone shield, reaction was widespread. Environmentalists urged an immediate ban, legislators held hearings and introduced legislation, government‐sponsored study committees were formed, fluorocarbon‐based industries defended their products and urged more definitive research (which they began to support in part). The concern, of course, is that the ozone layer shields life on Earth from harmful ultraviolet radiation. Much relevant research was already underway, sponsored by the Federal government, and by now workers in such disparate fields as atmospheric science, chemistry, physics and astronomy are working to answer the question, “Are the fluorocarbons depleting the ozone, and if so, how badly?”

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References

  1. 1. M. J. Molina, F. W. Rowland, Nature 249, 810 (1974); https://doi.org/NATUAS
    F. W. Rowland, M. J. Molina, Rev. Geophys. and Space Phys. 13, 1 (1975).https://doi.org/RGPSBL

  2. 2. “Fluorocarbons and the Environment” (Report of Federal Task Force on Inadvertent Modification of the Stratosphere), Council on Environmental Quality and Federal Council for Science and Technology, Washington, D.C., June 1975.

  3. 3. R. S. Stolarski, R. J. Cicerone, Can. J. Chem. 52, 1610 (1974).https://doi.org/CJCHAG

  4. 4. “Environmental Impact of Stratospheric Flight,” National Academy of Sciences–National Research Council. Washington, D.C., 1 April 1975.

  5. 5. V. Ramanathan, “Greenhouse Effect Due to Chlorofluorocarbons—Climatic Implications,” to be published in Science, 1975.

  6. 6. S. C. Wofsy, M. B. McElroy, N. D. Sze, Science 187, 1165 (1975).https://doi.org/SCIEAS

  7. 7. P. Crutzen, Geophys. Res. Lett. 1, 205 (1974).https://doi.org/GPRLAJ

  8. 8. R. Vupputuri, B. W. Boville. paper at 4th Climatic Impact Assessment Program, Cambridge, Mass., 1975.

  9. 9. A. Lazrus, B. Gandrud. R. Woodard, W. Sedlacek, Geophys. Res. Lett., to be published.

  10. 10. L. E. Heidt, R. Lueb, W. Pollock. D. H. Ehhalt, to be published.

  11. 11. A. L. Schmeltekopf, P. D. Goldan, W. R. Henderson, W. J. Harrop, T. L. Thompson, F. C. Fehsenfeld, H. I. Schiff, P. J. Crutzen, I. S. A. Isaksen, E. E. Ferguson. Geophys. Lett., to be published.

  12. 12. P. W. Krey, R. J. Lagomarsino, Environmental Quarterly, HASL‐294.

More about the authors

Gloria B. Lubkin, Senior Editor of PHYSICS TODAY.

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This Content Appeared In
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Volume 28, Number 10

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