OZONE-FRIENDLY CHEMICAL SAID TO BE CAUSING GLOBAL WARMING
August 26, 2009
Refrigerant chemicals that have replaced substances banned for allegedly harming the ozone layer are poised to become a major source of global warming, according to a study conducted by the Netherlands Environmental Assessment Agency (NEAA).
By the year 2050, hydrofluorocarbons (HFCs) -- which replaced chlorofluorocarbons (CFCs) banned by the Montreal Protocol -- may exacerbate carbon dioxide-related global warming by 19 percent, say researchers:
- Since the Montreal Protocol took effect in 1989, HFCs have replaced CFCs as the chemicals of choice for refrigeration and air conditioning.
- A decade later, there appears to be little difference in seasonal and annual fluctuations of the Earth's ozone layer, but the greater prevalence of HFCs has the NEAA worried about global warming.
- Increased use and emission of HFCs could largely undo the climate benefits already achieved by the Montreal Protocol.
Environmental policy analysts echo these findings. According to H. Sterling Burnett, a senior fellow with the National Center for Policy Analysis:
- The climatologists' opinion was we've got to stop using CFCs because they're affecting the ozone and increasing the greenhouse effect.
- Yet we've replaced it with another chemical that is still a greenhouse gas; we've traded one greenhouse gas for another greenhouse gas.
- Moreover, CFC was the original refrigerant and it was better than anything else on the market; it wasn't toxic to humans, it was a good insulator and it didn't seem to break up ozone layers over the cities where it is released.
According to environmental policy analyst Drew Thornley:
- This latest research highlights the potential unintended consequences of government regulation, and it further supports the position that drastic measures to curb greenhouse-gas emissions are premature, insofar as research is ongoing and current questions remain unanswered and new questions emerge.
- As an alternative to hasty, sweeping, climate-fighting mandates and regulations, a better approach is to take whatever time is necessary to continue important research and gather the information that will put us in a better position to protect the environment and consumers.
Source: Krystle Russin, "Ozone-Friendly Chemical Said to be Causing Global Warming," Heartland Institute, September 2009; based upon: Guus J. M. Velders et al., "The large contribution of projected HFC emissions to future climate forcing," Netherlands Environmental Assessment Agency, May 2009.
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