Abstract

The discovery by Farman et al. (1985) of a large springtime depletion of ozone over Halley Bay, Antarctica and its subsequent confirmation by satellite observations as a large scale progressive phenomenon led to intensive theoretical and experimental investigation to determine the cause of this potentially dangerous effect. Many of the theoretical approaches centered on modifications of stratospheric chemistry by polar stratospheric clouds. Several experimental expeditions were mounted to Antarctica to make observations to verify or disprove the theories.

© 1990 Optical Society of America