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

FROM VOLUME 8, NUMBER 2, FEBRUARY 1995

NEWS...
NEW EVIDENCE ON OZONE DEPLETION

Item #d95feb146

The National Aeronautics and Space Administration has released satellite data described as providing conclusive evidence that anthropogenic chemicals cause ozone destruction in the stratosphere. Using three years of data from the Upper Atmosphere Research Satellite, scientists have related distributions of CFCs to their breakdown products, including hydrogen fluoride (HF), which has no natural sources. The results refute claims, recently popularized in books and on talk radio, that anthropogenic chemicals are too heavy to reach the stratosphere, and that observed declines in ozone over Antarctica and elsewhere are caused by chemicals from natural sources such as volcanoes.

The World Meteorological Organization reported that in the northern midlatitudes, average ozone levels between 40·N and 60·N reached new record lows in October and November.

See Science News, p. 422, Dec. 24-31 1994; Chem. Eng. News, p. 9, Jan. 2 1995; Chem. & Industry, p. 3, Jan. 2 1995; Intl. Environ. Rptr., p. 14, Jan. 11 1995; Global Environ. Change Rep., pp. 5-6, Dec. 23 1994.