OZ5C. Stay Current—A Mystery Solved

Earth Portal section on Antarctic ozone hole 

2012 March 12.  F. Sherwood Rowland, Cited Aerosols’s Danger, Is Dead at 84 | By Felicity Barringer, The NY Times. Excerpt: F. Sherwood Rowland, whose discovery in 1974 of the danger that aerosols posed to the ozone layer was initially met with disdain but who was ultimately vindicated with the 1995 Nobel Prize in Chemistry, died on Saturday at his home in Corona del Mar, Calif….
…Industry representatives at first disputed Dr. Rowland’s findings, and many skeptical colleagues in the field avoided him. But his findings, achieved in laboratory experiments, were supported 11 years later when British scientists discovered that the stratospheric ozone layer, which blocks harmful ultraviolet rays, had developed a hole over Antarctica.
The discovery led to the 1987 Montreal Protocol, a landmark international environmental treaty to stop the production of the aerosol compounds known as chlorofluorocarbons, or CFC’s, and other ozone-depleting chemicals and to eliminate inventories of them….

4 March 2002. FUTURE VOLCANIC ERUPTIONS MAY CAUSE OZONE HOLE OVER ARCTIC — An “ozone hole” could form over the North Pole after future major volcanic eruptions, according to the cover story by a NASA scientist in tomorrow’s edition of the Proceedings of the National Academy of Sciences. 

28 May 2002. A WARM POLAR WINTER WAS EASIER ON ARCTIC OZONE — A NASA researcher has found unusually high levels of protective upper atmospheric ozone in the Arctic as a result of a rare sudden warming during the early winter of 1998.