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Cimate Change.docx

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Geography 1100
D.Kim Holland

Climate Change - Carbon dioxide comes from multiple sources, some completely natural o Ex. Volcanoes send huge amounts of CO2 into the atmosphere, extremely small compared to human impact o Every week in China they produce a new coal electric plant - Carbon will continue to rise, almost impossible to stop ▯ warming will continue - Per Capita basis of emissions, China is much better than a lot of other countries including the US and Canada - The 10 warmest years in the last 132 years have all been in the last 14 years o It has been 35 years since the last time the planet experienced an annual temperature that was below the 20 century average Global Destruction - Carbon Dioxide contributes to 57% of the world’s greenhouse gases - It’s getting warmer around the globe, but not at the same rate - Today’s CO co2centration is at 400 ppm - IPCC is the best place to look for climate change data o FAR (1990): “Unequivocal detection not likely for a decade” o SAR (1995): “Balance of evidence suggests discernible human influence” o TAR (2001): “Most of the warming of the past 50 years is likely (2/3) due to human activities” o AR4 (2007): Most of the warming is very likely (9/10) due to greenhouse gases - Predicted to push back permafrost and tree lines further inland in Polar environments and climate change - Human activities add 1.5 watts per square meter (Radiative Forcing) o Greenhouse gase
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