February 28, 2007
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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 2, NUMBER 9, SEPTEMBER 1989
EVIDENCE OF ARCTIC OZONE DEPLETION
Measurements made by instruments
on high-altitude balloons in January 1989 showed an apparent thinning in Arctic
ozone between 22 and 26 kilometers altitude coinciding with increased numbers of
cloud particles. The results, reported in the July 13, 1989, issue of Nature,
suggest the beginning of ozone depletion similar to that which creates the
Antarctic ozone hole. (See paper by Hofmann et al. in PROF. PUBS./OF GEN.
INTEREST, this Global Climate Change Digest issue--Sep. 1989, and
articles in Science News, p. 54, July 22, and New Scientist, p.
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