Class 13b: Air pollutionAir pollutionSlide 3Slide 4Slide 5Slide 6Particulate matterSlide 8Slide 9Slide 10Acid rainSlide 12Slide 13Slide 14Photochemial smogSlide 16Slide 17Slide 18Ozone layerSlide 20Class 13b: Air pollution• Particulate matter• Acid rain• Photochemical smog• Ozone and the ozone layerAir pollution•Pollution: concentration of substances that harms living things•Ash, smoke, dust, pollen•Fossil fuels, solvents•3 million deaths worldwideAir pollution•Physical geography–Prevailing winds–Topography and inversions•Level of urbanization, industrialization•Particulate matter or chemical compoundsParticulate matter•Source: incomplete burning of fuel• Respiratory problems• Short transport distance•Closest to source = most affectedAcid rain•Source: burning fossil fuels•Sulfur from coal becomes sulfuric acid•Terrestrial effects (forests, soils)•Aquatic effects•Material effects (buildings, monuments)Photochemial smog•Sources: incomplete burning of fuel•Nitrogen dioxide, hydrocarbons, and sunlight•Forms ozone at ground level•Respiratory problems, damage to plantsMetropolitan Statistical A rea 1993 2002Riverside-S an Bernardino, CA 167 96Fresno, CA 59 91Bakersfield, CA 97 91S ac ramento, CA 20 39Baltimore, MD 48 39Los Angeles-Long Beac h, CA 112 35Washington, DC-MD-VA-WV 52 34Philadelphia, PA-NJ 51 33 Dallas, TX 12 15S t. Louis, MO-IL 9 32 S an Diego, CA 58 13New York, NY 11 30 Boston, MA-NH 2 13Cleveland-Lorain-Elyria, OH 16 29 Milwaukee-Waukesha, WI 4 12Pittsburgh, PA 13 28 Ventura, CA 43 10Newark, NJ 13 27 S alt Lake City-Ogden, UT 2 7Cinc innati, OH-KY-IN 5 26 Denver, CO 3 7Atlanta, GA 36 24 S an Jose, CA 4 6Fort Worth-Arlington, TX 9 23 Phoenix-Mesa, AZ 14 6Houston, TX 27 22 Las Vegas, NV-AZ 3 2Detroit, MI 5 21 Minneapolis-S t. Paul, MN-WI 0 1Buffalo-Niagara Falls, NY 1 21 S eattle-Bellevue-Everett, WA 0 0Gary, IN 0 20 S an Franc isc o, CA 0 0Chic ago, IL 3 20 Orange County, CA 25 0Ozone non-attainment days, 1993-2002linkOzone layer•Ozone is necessary at high altitude•Absorbs UV (ultraviolet) radiation•CFCs, other chemicals break down ozone•One of few international success
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