UK Stratospheric Ozone FAQs

FAQs for Stratospheric Ozone are shown below.

  • What sort of natural variations does the ozone layer show?

  • Are ozone levels changing?

  • How is ozone created?

  • What is the ozone layer?

  • How and where is ozone measured in the UK?

  • What are CFC's?

  • How do CFC's destroy ozone?

  • Is ultraviolet radiation increasing at the earth's surface?

  • What is being done about ozone depletion?

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

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

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

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

  • When did the Antarctic ozone hole first appear?

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

  • Is there an ozone hole over the Arctic?

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

  • Does ozone depletion cause climate change?

  • How severe is the ozone depletion now?

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