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Published byAbigail Rodgers Modified over 9 years ago
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5.7 URBAN AIR POLLUTION
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Beijing, China
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Tropospheric ozone Tropospheric ozone (ground level ozone) = bad ozone (not protective) as a result of human activity Sources: Burning of fossil fuels hydrocarbons and Nitric oxides sunlight and NO 2 formation of 0 3 Problems: Ozone absorbed by plant leaves degrades chlorophyll so productivity is reduced Damages crops, forests Degrades many textiles and rubbers (think of an old rubber band!)
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Damage from ozone
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Photochemical smog Smog is often seen as a brown haze above a large city Sources: Mixture of ~ 100 primary and secondary pollutants (ozone, gaseous hydrocarbon) Largely a product of fossil fuel use in combination with sunlight (photochemical reaction) Problems: Toxic gas (lead to breathing difficulties and health problems)
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Smog Pollution in LA
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Pollution management strategies Read the information about Milwaukee’s air pollution Use the replace, regulate and restore model on page 282 to evaluate air pollution and develop a management plan
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