EESA11H3 Lecture Notes - Lecture 2: Global Warming Potential, Great Smog Of London, Nitrogen Dioxide

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Eesa11: lecture 2 - air pollution (part i). Criteria air pollutants or air quality indices. Understand issues and concerns relating to air quality. Explain the impacts of human activities on the atmosphere. Appreciate the complexity and interrelatedness of atmospheric issues. The atmosphere consists mainly of oxygen and nitrogen gases. Ambient air pollution: is found in the air around us, within the troposphere. The troposphere is the lower layer of the atmosphere, which starts at the earth"s surface. The stratosphere or good ozone layer extends upward about 6 - 30 miles and protects the earth from the sun"s harmful uv rays. Criteria air pollutants: are the most serious air pollutants as identified by the epa. The us 1970 clean air act required the epa to set standards in order to protect human health and welfare from pollutants in ambient air. Carbon monoxide, sulfur dioxide, nitrogen oxides, ozone, particulates, lead. Current name is principal or common pollutants ,

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