Ozone Hole over Antarctica Develops Earlier This gests that 100 years of temperature records aren't Year enough to show true trends but casts further doubt on National Oceanic and Atmospheric Administration the historical data method of predicting global climate (NOAA) observers at the South Pole have reported change, showing that the data itself are at least that the annual ozone hole over Antarctica has begun misleading—and maybe incorrect. to develop a week earlier than in previous years. Between 17- and 21 -k m altitude over the South Pole, NASA Ozone Instrument Aboard Soviet Space- unmistakable signs of ozon e depletion have shown up craft and at values not normally reached until about a week Under the 1987 U.S./U.S.S.R. agreement on "Coop- later in the year. eration in the Exploration and Use of Outer Space for It is still too early to tell whethe r ozone depletion will Peaceful Purposes," the first flight of a National Aero- be as deep or as persistent as in the past two years, nautics and Space Administration (NASA) ozone in- primarily because sunlight, which is vital to the atmo- strument on a Soviet spacecraft has taken place. spheric-chemical interaction believed to caus e ozone
Bulletin of the American Meteorological Society – American Meteorological Society
Published: Nov 1, 1991
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