What is Ozone?
• Ozone is super charged oxygen molecules (O3)• It is made naturally by the suns energy interacting with
atmospheric oxygen
wikipedia
What is Ozone cont.
• Our primary defense against harmful UVB radiation from the sun
• Ozone layer is between 6 and 30 miles above the Earth
• Ozone reflects radiation back out into space, but also reflects heat back down to Earth
wordpress
The Green House Effect
• Infrared (heat radiation) that does pass through Ozone is then trapped by green house gases and cannot escape back into space.
Global Greenhouse Warming
What is a CFC
• Chlorofluorocarbons destroy Ozone molecules• Used to be common in refrigeration units and
hair spray
NASA
Ozone Depletion Regulation
• Clean Air act (1990)– Manufacturer’s phase out of ozone depleting
compounds– Excise tax on sales of ozone depleting compounds– Required use of recovery equipment on air
conditioning and refrigerators – Set maximum allowable leakage rates
Ozone Depletion Video
• http://www.youtube.com/watch?v=PXV6ppONgUk