our changing planet ocea 80b professors sharon stammerjohn & andy moore ocean sciences...
TRANSCRIPT
Our Changing Planet
OCEA 80BProfessors Sharon Stammerjohn &
Andy MooreOcean Sciences Department
• We live in a time of recent unprecedented change in the Earth climate.
Global Average Temperature derived from theinstrumental record
Proxy of derived global average temperature and the instrumental record
“Climate Hockey Stick”(Michael Mann, Penn State)
•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
Land clearing in N.Am began.
Glacial Retreat in Europe
Chamonix, 1850
Chamonix 1856-1933Chamonix 1966
Chamonix today
Arctic Sea-Ice Extent- end of summer
The Northwest Passage
Climate Model Predictions
5/5/06
What of the future?
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.
Carbon Emissions by China
Mitigation: Kyoto Protocol
• U.S has never ratified Kyoto protocol.
“One planet, one experiment” – Edward O’Wilson
“The future depends on what we do in the present”- Mahatma Gandhi