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Unformatted text preview: Human sources ~ 30 billion tons/year Methane Even more extreme story with Methane. We were outside the natural range well before the industrial revolution Human sources are about double all natural sources Methane accounts for about 16% of the total greenhouse-gas effect. Remember, the whole pre-industrial atmosphere had about 600 gigatons of carbon. Right now we are adding over 8 gigatons/year, mostly from fossil fuels Things like sunspots, the Pacific Decadal Oscillation, the Southern Oscillation, volcanic eruptions and many more, do effect short-term temperatures....
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This note was uploaded on 09/11/2011 for the course AST 2002 taught by Professor Britt during the Spring '08 term at University of Central Florida.
- Spring '08