BIOL-103 Lecture Notes - Lecture 16: Chlorofluorocarbon, Nylon, Carpool
3 Oct 2018
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Document Summary
Carbon dioxide (co2): fossil fuel burning, especially coal (70-75%), deforestation, and plant burning: lasts 100-120 years in trophosphere, 1 relative warming potential compared to co2, 55% of anthropogenic contributions. Nitrous oxide (n2o): fossil fuel burning, fertilizers, livestock wastes, and nylon production: lasts 114-120 years in trophosphere, 23 relative warming potential compared to co2, 5% of anthropogenic contributions. Chlorofluorocarbons (cfc): air conditioners, refigerators, plastic foams: lasts 11-20 years (65-110 years in the trophosphere), 900-8300 relative warming potential compared to co2. Hydrocholoro-flurocarbons (hcfcs): air conditioners, refridgerators, plastic foams: lasts 9-390 years in the troposphere, 470-2000 relative warming potential compared to co2. Hydroflurocarbons (hfcs): air conditoners, refridgerations, plastic foams: last 15-390 years in troposphere, 130-12,700 relative warming potential compared to co2. Halons: fire extingusihers: last 65 years in troposphere, 5500 relative warming potential compared to co2. Do more research before acting: considerable uncertainty: more research needed before making far-reaching economic and political decisions.
