ENV100Y5 Lecture Notes - Lecture 49: Criteria Air Contaminants, Ozone Depletion, Smog
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ENV100Y5 Full Course Notes
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Session 49: air pollution and ozone depletion (i) 1-2-16) These lectures will help you understand: earth"s atmosphere . Weather and atmospheric circulation outdoor air pollution acidic deposition and its consequences (starting session 50 below) . Outdoor air pollution affects climate and harms people and ecosystems. Air pollutants = gases and particulate material added to the atmosphere. Outdoor (ambient) air pollution: has decreased in recent decades due to government policy, developing countries and urban areas still have significant and improved technologies in developed countries problems. Review: composition of the atmosphere (look at graph with more ex"s in slides) 2nd most-variable = aerosols from a variety of sources. Many pollutants are aerosols, which vary in both time and space (diagram ) Increasing towards the right, decreasing towards the left. Dust storms: 100s of millions of tonnes of dust are blown westward across the. Atlantic ocean by trade winds every year and across the.
