For Release: Feb. 7, 1996
Catherine E. Watson
Release No. 96-002
Measurements from the NASA Langley Halogen Occultation Experiment (HALOE) instrument have provided evidence "beyond all reasonable doubt" that chlorofluorocarbons (CFCs) are responsible for the annual reduction in stratospheric ozone over Antarctica known as the ozone hole.
In the Feb. 8 issue of Nature, HALOE project scientist Dr. James Russell III discusses how more than three years of HALOE measurements have confirmed that CFCs are the largest source of ozone-destroying chlorine in the stratosphere. Russell said, "These results implicate the CFCs beyond all reasonable doubt as dominating ozone depletion in the lower stratosphere."
Russell will be available for media interviews from 10 to 11 a.m. Feb. 8 at the NASA Langley Research Center newsroom, 5 N. Dryden St., Hampton.
The HALOE measurements confirmed CFCs as the source of the ozone-destroying chlorine by measuring both chlorine and fluorine gases in the stratosphere. The results show that both of these gases are primarily created by the breakdown of CFCs.
Media who wish to attend the briefing should contact Catherine Watson at 864-6122.
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