Environmental Science 1021F/G Lecture Notes - Lecture 10: Global Warming Potential, Chlorofluorocarbon, Organofluorine Chemistry
20 Mar 2016
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After this another oxygen molecule steals said oxygen molecule away, leaving a chlorine molecule again. Ozone loss: loss of good ozone (ozone layer) in the stratosphere. Greenhouse effect: trapping of heat by greenhouse gases in troposphere. Cfc"s and water vapor deplete ozone layer and are ghg"s. Greenhouse effect causes stratosphere to cool, creates clouds, therefor it increases depletion. The earth"s natural and enhanced greenhouse effect: solar radiation from sun enters troposphere, some escapes, some remains trapped. Anthropogenic greenhouse effect: human based, gases trap a lot of heat in troposphere, same amount of radiation coming in/being reflected but more is trapped, water vapor = green house gas. Main greenhouse gases: co2, methane, nitrous oxide, cfc-12, hcfc-22, perfluoromethane, sulphur hexafluoride (4,5,6,7 = human created) 1: deforestation/grassland clearing (slash and burn) (decomposing releases methane) Increased in cattle raising (methane) (people are eating more meat) 3: growing rice (grown in water, some plant material left in water, bacteria releases methane)
