9Z8_SomervilleSpeakingTruthToPower

9Z8_SomervilleSpeakingTruthToPower - Speaking Truth to...

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Speaking Truth to Power: The Scientific Case for Urgent Action to Avoid Severe Climate Disruption Richard C. J. Somerville Scripps Institution of Oceanography University of California, San Diego, USA www.richardsomerville.com
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Charles D. Keeling  (1928-2005) Mauna Loa Observatory, Hawaii Measuring the amount of carbon dioxide in the atmosphere
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Fossil Fuel CO 2 Emissions billion tons CO 2 y -1 Time (years) data: CDIAC; Global Carbon Project
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Global Temperature Change Since 1960 30-year linear trend 2009 (preliminary) range of natural variability
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Temperature 1850 - 2010
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Minimum Arctic sea-ice extent from 1979 to 2007
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Observed and Modeled Arctic Sea-ice Extent
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Sea-level change 1970-2010
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discernible human influence on global climate.” - IPCC (1995). “There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities.” - IPCC (2001). IPCC = Intergovernmental Panel on
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This note was uploaded on 06/06/2011 for the course BILD 18 taught by Professor Saier during the Spring '07 term at UCSD.

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9Z8_SomervilleSpeakingTruthToPower - Speaking Truth to...

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