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Published byAmie Powell Modified over 9 years ago
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Our Changing Planet OCEA 80B Professors Sharon Stammerjohn & Andy Moore Ocean Sciences Department
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Outline A time of unprecedented change Global average temperature rise Glacial retreat Sea-ice melt Climate Change and disease IPCC – scientific knowledge and concensus Politically charged issue - agendas Economic growth Importance of being well informed OCEA 80B
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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 the instrumental 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 1856-1933 Chamonix 1966Chamonix 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
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