There are contradictory news story almost every day

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Unformatted text preview: mate] change over the past 50 years cannot be explained by natural processes alone.” US Climate Change Science Program Sources: http://www.epa.gov/globalwarming/climate/index.html; http://www.climatescience.gov/Library/pressreleases/pressrelease2may2006.htm 7 43 Per Capita CO2 Production 2005 44 Not all the evidence clearly points to global warming. There are contradictory news story almost every day. All we can do is take the best evidence we can get, listen to the most reliable sources, and try to make the most prudent decisions. • The top 5 producers of CO2 (per 1,000 people, in metric tons): – – – – – Qatar UAE Kuwait Bahrain US 40.7 28.2 25.0 20.0 19.5 But Isn’t There Controversy? CO2 production, per 1,000, in metric tons. Source: http://www.nationmaster.com/ ; Data source: Secretariat of the UN Framework Convention on Climate Change (UNFCCC). 45 46 Sometimes the research is serious, sometimes it seems silly. Chacaltaya: End of a Glacier More information Source: http://news.bbc.co.uk/2/hi/americas/6496429.stm; http://www.miamiherald.com/news/americas/story/1030126.html; http://www.nytimes.com/2007/02/02/world/americas/02bolivia.html?_r=1 47 Warming of the climate system is “unequivocal.” For the next two decades temperatures will rise by 0.2˚C, with continued rising through the end of the century. A total rise in global average temperatures of about 2.0˚C4.5˚C (3.6 - 8.1°F) is likely. Predicted sea level rise is 0.30.8m (11.8-31.5 in). Snow cover at the global scale is predicted to contract, with widespread thawing of permafrost. Mmidlatitude and tropical storm tracks are predicted to move poleward. Precipitation may increase at higher latitudes and decrease in the subtropics. Climate changes will persist for centuries. Highlights from the IPCC 2007 Summary for Policymakers 48 Global-Scale Air Pollution: Ozone GlobalOxygen makes up about 21% of the atmosphere. Most of the time, atmospheric oxygen atoms travel in pairs — as O2 molecules molecules However, oxygen in the atmosphere can exist in another form — as O3 or ozone. Source: http://uarsfot08.gsfc.nasa.gov/HP_THEME/Ozone_...
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This note was uploaded on 12/16/2010 for the course GEOG 102 taught by Professor Osborn during the Fall '10 term at San Diego State.

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