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Earth_122_Ch09_notes_-_slides

Earth_122_Ch09_notes_-_slides - Introduction to...

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Introduction to Environmental Science: 9. Air Pollution Earth 122 Prof. Walter A. Illman
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Air Pollution Th h ll ti i th i th t if it ’t f l th ’d b There’s so much pollution in the air now that if it weren’t for our lungs there’d be no place to put it all. Robert Orben
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Objectives Describe the major categories and sources of air pollution. Distinguish between conventional or “criteria” Distinguish between conventional or criteria pollutants and unconventional types as well as explain why each is important explain why each is important. Analyze the origins and dangers of some indoor i ll air pollutants. Relate why atmospheric temperature inversions occur and how they affect air quality.
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Objectives Evaluate the dangers of stratospheric ozone depletion and radon in indoor air. Understand how air pollution damages human health, vegetation, and building materials. C diff h i ll i Compare different approaches to air pollution control. Judge how air quality around the world has improved or degraded in recent years and suggest what we might do about problem areas.
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Outline Natural Sources Human Caused Air Pollution Criteria (Conventional) Pollutants Unconventional Pollutants Indoor Air Pollution Climate, Topography and Atmospheric Processes Effects of Air Pollution Air Pollution Control Current Conditions and Future Prospects
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THE AIR AROUND US Approximately 147 million metric tons of air pollution are released annually into the atmosphere in the U S by human activities atmosphere in the U.S. by human activities. Worldwide emissions total around 2 billion metric tons. Developed countries have been improving air quality while air quality in developing world is quality, while air quality in developing world is getting worse.
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NATURAL SOURCES OF AIR POLLUTION Natural Fires Smoke Volcanoes Ash and acidic components Sea Spray Sulfur Vegetation Volatile organic compounds B t i l M t b li M th Bacterial Metabolism Methane Dust Pollen Viruses and Bacteria
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