A Sea of Air

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A Sea of Air

• Soot, Ozone Climate Change

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AtmosphereComposition
Nitrogen 78 Oxygen 21 Argon 0.9 Carbon
Dioxide 0.04 Neon, Helium, Methane, Krypton,
Hydrogen, Nitrous Oxides, Aerosols 0-4
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Atmosphere Layers
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Air Quality
Secondary Photochemical Smog Acid Rain
Primary Sulfur Oxides Nitrogen Oxides Carbon
Oxides Metals Halogens Particulates Volatile
Organic Compounds (VOCs)
Others Odors Noise Pollution Light
Pollution Electromagnetic Radiation
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Problems

1. Water Pollution
2. Visibility
3. Structural Damage
4. Human Health
5. Ecological Impacts
6. Ozone Depletion
7. Global Warming

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Solutions

• Control emissions
• Particulate removal
• Sulfur removal
• Nitrogen oxide control
• Reduce emissions
• Legislation

What about CO2?
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Clean Air Act - Positive Results
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Ozone
Good Ozone Bad Ozone
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Ozone Hole

• Theorized in 1970
• Observed in 1985

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The VillainOzone Destroying Chemicals
Chlorofluorocarbons (CFCs) Carbon
Tetrachloride Hydrobromofluorocarbons
(HBFCs) Methyl Bromide
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Why Antarctica?
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Positive ResultsMontreal Protocol, 1987
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CFC Production
Cl
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Excellent example of the success of the
Precautionary Principle