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Transcript
Climate Change Some Climate Change Statistics 2007: Intergovernmental Panel on Climate Change (IPCC) Oceans will rise 7-23 inches by year 2100 90% certain that humans caused accelerated warming of 20st century Higher CO2 Global Warming Climate Change Changes timing & length of seasons Changes rainfall amounts Climate Change Climate change: significant, long-lasting changes in weather patterns Includes… Intensity of weather Number of severe weather events Regional or Global Is Climate Change the same as Global Warming? No! Global warming contributes to climate change Warmer temperatures affect world weather patterns: Rainfall amounts Storms Droughts Sea Level So what is Ozone?! -OZONE (O3) -CFCS? -WHY DO WE NEED OZONE? Greenhouse Gases Greenhouse Gases are naturally present in the Earth’s atmosphere GGs help maintain a “healthy” global temperature by trapping heat Greenhouse Gases: Water vapor (H2O) Carbon Dioxide (CO2) Methane (CH4) Nitrous Oxide (N2O) Ozone (O3) Greenhouse Effect “The Greenhouse Effect”: the “trapping” of heat by greenhouse gases in the atmosphere The “trapped” warms the Earth Greenhouse Effect is NORMAL, but has been amplified by human production of CO2 How does it work? Humans CO2 Production Global Warming Climate Change Before Global Warming After Global Warming • VERY close to ocean • Result of coastal erosion So… Officials had to move Cape Hatteras Lighthouse 2,870 feet inland! 1999-2000 Peterman Glacier, Greenland
