10 - Engineering the Environment

10 - Engineering the Environment - Engineering and Society:...

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Copyright Gershon Weltman, 2009 Engineering and Society: Engineering the Environment Dr. Gershon Weltman Engineering 183W, UCLA SEAS Lecture 10
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  2 The Environment Image courtesy Malin Space Science Systems, 2004
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  3 The Environment is Complex Biosphere II (1990-Present) Closed Ecology High Aspirations Technical Failure Today’s Uses Tourist Attraction Creative Stimulus Space Prototype? Biosphere on Mars Biosphere in Arizona Biosphere in Tucson, AZ
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  4 The Environment Affects…. How human beings live today The lives of future human beings The lives of future species Is the environment improving or deteriorating? Are we the primary causer, or only the affected?
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  5 Historical Insults to the Environmental 1 Circa Environmental Effect 55 BC Deforestation of the British Isles 0-100 Deforestation of the Mediterranean region 900 Waste and pollution from inefficient heating 1700 French streams blocked by 10,000 mills 1830 European cities devastated Cholera from sewage 1840 Settlers shave the plains on several continents 1870 Factories spew toxic fumes into atmosphere 1900 Major industrial cities choked by coal smog 1940 Europe’s forests denuded to fuel WWII 1960 More than 400 test nuclear explosions 1 Dr. Joseph Miller, SEAS Engineering 193, 2003
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  6 The Point Being……. “Environmental sins and suffering are not new. Humans have always exploited the territories within reach. The question is whether the technology that has extended our reach can now also liberate the environment from human impact…. . and perhaps even transform the environment for the better. Present cultural conditions favor this latter movement .” Dr. Joseph Miller, 2003
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  7 Today’s Major Environmental Problems Depletion of Natural Resources Effects of Industrialization Smog & Ozone Production Chlorofluorocarbons & the Ozone Layer Technology Byproducts meet Natural Phenomena
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  8 Example: Smog Conditions in Los Angeles Smog Components Ozone Nitrous Oxides Unburned Fuel Other Pollutants
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  9 San Fernando Valley Inversion
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  10 Production of Photochemical Smog http://mtsu32.mtsu.edu:11233/Smog-Atm1.htm
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  11 Results of Smog Control in LA Area http://www.aqmd.gov/
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  12 Ozone Layer Depletion (Chlorofluorocarbons) http://www.okiu.ac.jp/Language/contest/02/12/ozone.htm
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  14 Models of Emission-Limiting Protocols http://www.okiu.ac.jp/Language/contest/02/12/ozone.htm
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  15 Global Warming: The Greenhouse Effect http://www.ecy.wa.gov/programs/air/globalwarming/Global_Warming_site.html 1 2 3 4 Greenhouse Gases Carbon Dioxide Methane Chlorofluorocarbons Others
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10 - Engineering the Environment - Engineering and Society:...

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