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Global Climate Change DigestArchives of the
Global Climate Change Digest

A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999



Item #d94jul164

Global average stratospheric ozone appears to be returning to more normal levels from the record lows observed in 1992 and 1993, according to satellite data from the National Aeronautics and Space Administration. Researchers believe the June 1991 eruption of Mount Pinatubo temporarily accelerated a slow decline in ozone of about 2.5 percent per year, but its effect is dissipating. (See Chem. Eng. News, p. 6, June 6; Science, p. 1078, May 20.)

A May 2 report from the Global Ozone Observing System of the World Meteorological Organization said that record declines in ozone were observed over Antarctica last fall. (See Intl. Environ. Rptr., p. 419, May 18; New Scientist, p. 17, May 14.)

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