chapter 3 cont'd - Chapter 3 Earths Modern Atmosphere...

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Chapter 3 Earth’s Modern Atmosphere
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Variable Atmospheric Components: Subtopics Natural Sources Natural Factors That Affect Air Pollution Anthropogenic Pollution Benefits of the Clean Air Act Focus Topic : Ozone Layer
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Natural Sources Natural sources >> Human-made sources Humans are adapted to naturally-produced pollutants, but not human-produced
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June 15, 1991 15 to 20 million tons of SO 2 3 days 60 days, 42% of globe 45 days 25 days
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Natural Factors That Affect Air Pollution Winds—gather and move pollutants; ± concentrations Local and regional landscapes—barrier or conduit Temperature inversion Temperature increases with altitude Result of a weather condition
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Temperature Inversion Figure 3.9 Halting escape of warmer, polluted air—pollutants trapped in layer Inversions the result of a weather condition
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Temperature Inversion Temperature Inversion Figure 3.9 Utah
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Anthropogenic Pollution (1) Urbanized areas most affected ~50,000 people die every year By 2010, nearly 48% of the world’s population will live in metropolitan region Main sources of pollution are Automobiles >60% Combustion of fossil fuels
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This note was uploaded on 10/16/2008 for the course PHYSICAL G 101 taught by Professor F during the Spring '08 term at E. Stroudsburg.

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chapter 3 cont'd - Chapter 3 Earths Modern Atmosphere...

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