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Ozone Protection Is a Warming Issue
For the past 3 years there have been efforts to list under the Montreal Protocol a group of substances that replace the CFCs and HCFCs but do not contain chlorine and therefore cannot harm the ozone layer. Credit: iStockphoto
By Ian D. Rae
Ozone-depleting chemicals may have been phased out under the Montreal Protocol, but the global warming potential of their replacements is thousands of times greater than carbon dioxide.
Ian Rae is an Honorary Professorial Fellow at the University of Melbourne. He is co-chair of the Montreal Protocol’s Chemicals Technical Options Committee, and a member of the Technology and Economic Advisory Panel. These expert groups provide technical information and are not involved in advocacy or policy formulation.
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