webnotes_lec21_ccycle_111507

webnotes_lec21_ccycle_111507 - 19% Nitrous Oxide, 6% Other,...

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Animation available at http://earthobservatory.nasa.gov/
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1997 - 2002 1979 - 1986 difference
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Source: EPA (in US)
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Chemical bonds absorb solar energy Radiate back to environment as heat (IR) O O C Sun
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CO 2 – not alone on the warming front Methane CFC’s Nitrous oxides (NO x ) Hydrocarbons Water Vapor Greenhouse Warming – not all bad Current mean global temp: 15 C If CO2 removed: -18 C
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Carbon dioxide, 64% Methane,
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Unformatted text preview: 19% Nitrous Oxide, 6% Other, 5% CFCs, 6% http://www.esrl.noaa.gov/gmd/ccgg/trends/ approx 280 ppm in 1850 Differences between current increase and past peaks? K= 22 billion at 1.24 acres K= 1.2 billion at 23.6 acres 1 hectare = 2.47 acres Climate Change impacts on species?? shifts in distribution of plants and animals (evidence) Patterns of disease? (speculative)...
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webnotes_lec21_ccycle_111507 - 19% Nitrous Oxide, 6% Other,...

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