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Unformatted text preview: 1 ES 2 W 09 Lec #22 Climate Change: Focusing on Carbon Readings: K&B Ch13; M&K 94-95; 158-159, 168-169 SR: McKibben (2007) Carbon’s New Math I. Milankovitch & the glacial- interglacial cycles II. Carbon-problem characteristics III. Where is Giga when we need her? IV. Carbon’s past, present & future A. Future effects B. CO 2 stabilization C. Carbon wedges D. Carbon capture & storage V. Carbon footprints A. Beef B. Orange Milankovitch cycles are strongly correlated with cyclical changes in the earth’s temperature and the corresponding advances and retreats of glaciers (glacial & interglacial periods). See Fig 13.6 2 Carbon-problem Characteristics Annual rate of C or CO 2 from fossil fuel burning (giga tonnes / yr) CO 2 accumulation in the atmosphere (giga tonnes or ppm, concentration) CO 2 molecular weight = 12 + (2 X 16) = 44 Carbon isotopes: C 12 (99%) plants prefer this isotope C 13 (1%) plants don’t prefer it C 14 (1ppt) radioactive (half life = 5730yr); carbon dating Combustion...
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This note was uploaded on 04/02/2009 for the course ENV S 2 taught by Professor Keller during the Winter '09 term at UCSB.
- Winter '09