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Unformatted text preview: o 1990- London meeting, phase out by 2000 o 1992- Copenhagen, ban moved up to 1996 o 2024- detectable recovery predicted o 2068- levels back to 1980’s Naturally Occurring greenhouse gases H2) (water vapor)- volcanoes, hydrologic cycle CO2 (carbon dioxide) –volcanoes, weathering, respiration CH4 (methane) -volcanoes, wetlands, hydrocarbon leaks Human generated CO2 (carbon dioxide)- burning fossil fuels, deforestation CH4 (methane)- livestock, rice paddies, draining swamps, landfills, natural gas NiO2 (nitrous oxide)- agriculture (fertilizers, soil disturbance, burning fossil fuels) CFC’s (chlorofluorocarbons)-aerosols HFC’s (halfluorocompounds)-aerosols PFC’s (perfluorcarbon) - aerosols...
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This note was uploaded on 04/18/2008 for the course ERS 102 taught by Professor Kelley during the Spring '08 term at University of Maine Orono .
- Spring '08