Ozone Measurements Support Theories

On December 19 NASA provided the most conclusive evidence yet that chlorine molecules from CFCs are responsible for ozone destruction in the stratosphere. Mark Schoeberl, project scientist with NASA’s Upper Atmosphere Research Satellite, was quoted in the 23 December 1994

Global Environmental Change Report (GECR) saying that “the detection of stratospheric fluorine gases, which are not natural, eliminates the possibility that chlorine from volcanic eruptions or some other natural source is responsible for the ozone hole.” NASA’s calculations show that only about 17% of stratospheric chlorine could be from natural sources.