Download Major Environmental Issues of Our World

Major Environmental Issues of Our
World
Global
Atmospheric
Changes and
Air Quality
Issues
Global Climate Change
• Mean annual global temperature,1960–
2003
Global Climate Change
• The Causes of Global Climate Change
•
CO2 in the atmosphere
Global Climate Change
• The Causes of Global Climate Change
•
Enhanced Greenhouse Effect
Global Climate Change
• Effects of Global Climate Change
• Melting Ice and Rising Sea Levels
1998
1957
Global Climate Change
• Effects of Global Climate Change
• Effects on Organisms
Present range of
beech trees
Predicted range
after climate
change
Global Climate Change
• Effects of Global Climate Change
• Melting Ice and Rising Sea Levels
Melting
permafrost
Global Climate Change
• International Implications of Global Climate
Change
• Highly Developed versus Developing Nations
Global Climate Change
• Specifics on How to Deal with Global
Climate Change
More serious
Less
More greenhouse
climate change
gases
produced
mitigation
effects
Greater impact on humans
and natural environment
More adaptation
required
Ozone Depletion in the
Stratosphere- Due to CFC’s
Normal levels
of ozone
Reduced levels
of ozone
Acid Deposition +Acid rain
• Measuring Acidity
Acid Deposition
• How Acid Deposition Develops
Acid Deposition
• Acid Deposition and Forest Decline
Acid Deposition
Air Pollution
Issues
The Atmosphere as a Resource
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Atmospheric composition:
Nitrogen = 78%
Oxygen = 21%
Argon = 0.93%
Carbon dioxide = 0.04%
Types and Sources of Air Pollution
• Primary and Secondary Air Pollutants
Types and Sources of Air Pollution
• Primary Air Pollutants
Carbon
monoxide
Nitrogen oxides
Particulates
Volatile
organics
Sulfur dioxide
Ammonia
Lead
Types and Sources of Air Pollution
• Sources of Outdoor Air Pollution
Transportation
Fuel
combustion
Industrial
processes
Other
Urban Air Pollution
Types and Sources of Air Pollution
• Case-in-Point: Air Pollution in Los Angeles
and Mexico City
Sources of smog in Los Angeles
Trucks, buses, &
passenger vehicles
Industries
Aircraft, ships, & trains
Consumer products &
homes
Controlling Air Pollution in the United States
• Clean Air Act
Emissions in the US, 1970 vs. 2000
Air Pollution Around the World
• Many nations do not have most current
pollution scrubbing technologies
Air pollution in China
Air Pollution Around the World
• Long-Distance Transport of Air Pollution:
Global Distillation Effect
Indoor Air
Pollution
Indoor Air Pollution
• Radon
• Carcinogen