Number 106 (Story #1), December 14, 1992 by Phillip F. Schewe and Ben Stein THE DEVELOPMENT OF THE ANTARCTIC OZONE HOLE has been more directly linked to manmade chlorofluorocarbons (CFCs). At the American Geophysical Union meeting in San Francisco last week, Joe Waters of JPL, Aidan Roche of Lockheed, and other scientists using the Upper Atmosphere Research Satellite (UARS) reported that the seasonal destruction of stratospheric ozone in September is preceded in the summer by a buildup of ozone-killing chlorine compounds deriving from CFCs. The UARS team released the first images of this buildup, showing a considerable gathering of chlorine monoxide in June in extreme southern latitudes. Ralph Cicerone of UC Irvine (714-725-2157) said that the amount of chlorine measured corresponded to the levels one would expect from the known release of manmade pollutants.