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UK Stratospheric Ozone FAQs 

FAQs for Stratospheric Ozone are shown below.

What sort of natural variations does the ozone layer show?

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Are ozone levels changing?

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How is ozone created?

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What is the ozone layer?

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How and where is ozone measured in the UK?

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What are CFC's?

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How do CFC's destroy ozone?

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Is ultraviolet radiation increasing at the earth's surface?

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What is being done about ozone depletion?

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How can Chlorofluorocarbons (CFCs) get to the stratosphere if they're heavier than air?

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What is the evidence that stratospheric ozone is destroyed by chlorine and bromine?

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Does most of the chlorine in the stratosphere come from human or natural sources?

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Can natural changes such as the Sun's output and volcanic eruptions be responsible for the observed changes in ozone?

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When did the Antarctic ozone hole first appear?

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Why has an ozone hole appeared over Antarctica when CFCs and halons are released mainly in the Northern Hemisphere?

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Is there an ozone hole over the Arctic?

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Is the depletion of the ozone layer leading to an increase in ground-level ultraviolet radiation?

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Does ozone depletion cause climate change?

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How severe is the ozone depletion now?

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Is the ozone layer expected to recover? If so, when?

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