our changing planet ocea 80b professors sharon stammerjohn & andy moore ocean sciences...
TRANSCRIPT
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Our Changing Planet
OCEA 80BProfessors Sharon Stammerjohn &
Andy MooreOcean Sciences Department
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• We live in a time of recent unprecedented change in the Earth climate.
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Global Average Temperature derived from theinstrumental record
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Proxy of derived global average temperature and the instrumental record
“Climate Hockey Stick”(Michael Mann, Penn State)
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•Hockey stick questioned by Canadian mining engineers•Some to-ing and fro-ing in the scientific literature•Michael Mann testifies before the US Senate•Special US Congress subcommittee convened•US Academy of Sciences weighs in and supports Mann’s original results
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Land clearing in N.Am began.
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Glacial Retreat in Europe
Chamonix, 1850
Chamonix 1856-1933Chamonix 1966
Chamonix today
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Arctic Sea-Ice Extent- end of summer
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The Northwest Passage
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Climate Model Predictions
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5/5/06
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What of the future?
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Economic Growth
• Booming economies in India and China – more affluent middle-class.
• Combined populations of China and India ~2.4 billion people (www.cia.gov)
• World population ~ 6.5 billion people (www.cia.gov)
• Global Carbon emissions have increased 19% since 1990.
• China’ emissions have increased 47%.• In 2006, carbon emissions in China exceeded
those of the United States.
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Carbon Emissions by China
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Mitigation: Kyoto Protocol
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• U.S has never ratified Kyoto protocol.
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“One planet, one experiment” – Edward O’Wilson
“The future depends on what we do in the present”- Mahatma Gandhi