01-20-2007
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President
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Member Since: Feb 2004
Location: Midwest US
Posts: 11,409
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Re: Ski resorts affected by climate change
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Originally Posted by Slartibartfas
Or who caused the Ozon hole? Who?
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No one causes ozone depletion. Nature does.
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Volcanoes, Ozone Holes, Natural Disasters, Atmosphere, Environmental Issues, Air Quality
Volcanic Aerosol Clouds And Gases Lead To Ozone Destruction
Volcanic eruptions destroy ozone and create 'mini-ozone holes', according to two new studies by researchers at the Universities of Cambridge and Oxford.
November 8, 2006
The new research, spearheaded by Dr Genevieve Millard at the Department of Earth Sciences, University of Cambridge, discovered that volcanic gases released during eruptions accelerate reactions that lead to ozone destruction. The researchers found that even relatively small volcanic eruptions can destroy ozone and create localised 'holes' in the stratosphere. Previously, scientists had concentrated on the climatic effects of the tiny particles of volcanic sulphate created from the sulphur dioxide gas emitted during an eruption.
For the first time, analysing data from a 2000 eruption of the Hekla volcano, Iceland, the researchers discovered that volcanic gases may also lead to the formation of ice and nitric acid particles. This is a critical finding as these particles 'switch on' volcanic chorine gases, accelerating reactions that lead to ozone destruction.
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