Wednesday, October 5, 2011

Arctic ozone loss at record level

            The ozone layer in the Arctic has hit a record loss. Scientists say that at 20km above the surface, 80% of the ozone has been lost. The cause of this is the unusually long cold weather conditions. The Arctic was cold from December to April which has never happened before. When it is cold the chemicals that eat away at the ozone tend to be most active. These chemicals are from the use of CFC’s. Although they have been banned since 1987, they have remained in the atmosphere for decades and are degrading very slowly. Scientists say that it is unknown why the weather was cold for so long and that it will take a lot of research to figure out. The decrease in ozone could increase the risk of skin cancer because of the increased UVB rays reaching Earth’s surface. I believe that this is another effect of climate change. People are continuously contributing to climate change and possibly making it colder. This may be causing the increase ozone depletion.

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