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Abstract

The ozone layer in the upper atmosphere is a natural feature of the earth's environment. It performs several important functions, including shielding the earth from damaging solar ultraviolet radiation. Far from being static, ozone concentrations rise and fall under the forces of photochemical production, catalytic chemical destruction, and fluid dynamical transport. Human activities are projected to deplete substantially stratospheric ozone through anthropogenic increases in the global concentrations of key atmospheric chemicals. Human-induced perturbations may be occurring already.

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Published In

Science
Volume 237 | Issue 4810
3 July 1987

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Published in print: 3 July 1987

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Ralph J. Cicerone
National Center for Atmospheric Research, Boulder, CO 80307.

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