lect04-27-10

lect04-27-10 - Readings (April 27 April 29) Miller and...

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Unformatted text preview: Readings (April 27 April 29) Miller and Spoolman, Chapters 18, 19, 20 Harris, J. and A. Codur "Economics of Climate Change", Encyclopedia of Earth, 2008 Air Pollution indoor vs. outdoor global - greenhouse effect, ozone depletion local & regional - industrial smog, photochemical smog causes, consequences, solutions Indoor Air Pollution indoor air pollution can be an even greater health threat than outdoor air pollution important indoor air pollutants include tobacco smoke, radon, formaldehyde, and asbestos Outdoor Air Pollution range of a pollutant determines how far it may spread horizontal range vs. vertical range of a pollutant damage caused is also determined by environment's absorptive capacity for pollutant serious global or regional air pollution problems result from pollutants that have long ranges and are not easily degraded (or rendered harmless) "greenhouse effect" and "ozone depletion" are important and distinct phenomena caused by such pollutants Greenhouse Effect short wave radiation in, long wave radiation out re-radiation downward by "greenhouse gases" in atmosphere heat trapped near the Earth's surface Human Inputs in Greenhouse Effect carbon dioxide (CO ) a) CO2 b) CFCs Human Inputs in Greenhouse Effect methane (CH ) c) CH4 d) N2O Possible Consequences of Increased Greenhouse Gases Controversies Regarding Greenhouse Effect is global climate change really happening? is the process subject to human control? is the cost of control too high? Mean Global Temperature mean global temperature rose about 0.6 C (1 F) in past 100 years warming greater at poles than equator, and greater at night Climate During Past 160,000 Years a fairly strong correlation exists between global CO 2 & mean temperature levels Worldwide Distribution of Greenhouse Gas Emissions developed countries account for about 60% of annual greenhouse gas emissions top five contributors (2006): China (21.5%), U.S. (20.2%), European Union (13.8%), Russia (5.5%), India (4.6%) Recent Trends in U. S. Greenhouse Gas Emissions 1,850 1,800 1,750 MMTCE 1,700 1,650 1,600 1,550 1,500 1990 1991 1992 1993 1994 Year 1995 1996 1997 1998 U.S. Emissions Distribution by Sector General Ways of Reducing Greenhouse Gases Role of Technological Change and Adaptation ...
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This note was uploaded on 04/30/2010 for the course ARE 110 taught by Professor Ebbin,s during the Spring '08 term at UConn.

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