1. Our Changing Planet OCEA 80B Professors Sharon Stammerjohn & Andy Moore Ocean Sciences Department

2. 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

3. We live in a time of recent unprecedented change in the Earth climate.

4. Global Average Temperature derived from the instrumental record

5. Proxy of derived global average temperature and the instrumental record “Climate Hockey Stick” (Michael Mann, Penn State)

6. 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

7. Land clearing in N.Am began.

8. Glacial Retreat in Europe Chamonix, 1850 Chamonix 1856-1933 Chamonix 1966Chamonix today

9. Arctic Sea-Ice Extent - end of summer

12. The Northwest Passage

16. Climate Model Predictions

18. 5/5/06

19. What of the future?

24. 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.

25. Carbon Emissions by China

26. Mitigation: Kyoto Protocol

27. U.S has never ratified Kyoto protocol.

28. “One planet, one experiment” – Edward O’Wilson “The future depends on what we do in the present”- Mahatma Gandhi