1. Climate change and rising seas Environmental Science 21 October 2009 Donald Winslow Readings: Withgott & Brennan 2009 Essential Environment, 3rd ed., Ch 14 pp 303-325 Lester Brown, Plan B 3.0, www.earth-policy.org Chapter 3

2. Climate change Milankovitch cycles CO 2 and temperature Anthropogenic climate change CO 2 emissions CH 4 emissions Intergovernmental Panel on Climate Change Remedies

3. Milankovitch cycles Shape of Earth's orbit Tilt of axis Wobble

4. CO 2 and temperature http://www.ipcc.ch

5. Anthropogenic climate change Evidence & effects Temperature, CO 2, melting ice, rising seas Hurricanes Species distributions Pronounced warming at higher latititudes Increases in photosynthesis from increased CO 2 Decreases in photosynthesis from increased T

6. Civilization & the New World Readings from Lester Brown 2008. Plan B 3.0; Chapter 3 http://www.earth-policy.org/Books/PB3/index.htm

7. Features of Plan B Electronic version available as pdf files References Data sets as xls files “Cutting carbon emissions 80% by 2020”

8. Rising temperatures & rising seas Effects of rising temperature Crop yield Reservoirs in the sky Melting ice & rising seas Destructive storms Cutting carbon emissions 80% by 2020

9. Sea level rise IPCC estimate 18-59 cm by 2100 Intergovernmental Panel on Climate Change www.ipcc.ch Estimate based on data thru 2006 Considering 2007 melting, maybe 200 cm After Greenland & West Antarctic Ice Sheet melt: 700-1200 cm

10. Arctic ice on 16 September 2008 Photo by NASA/Goddard Space Flight Center, via Reuters

11. EPA study of sea level rise http://epa.gov/climatechange/effects/coastal/slrmaps.html

12. Gulf of Mexico after 12 m rise in sea level http://flood.firetree.net/?ll=23.3624,-85.4297&z=12&m=12 Alex@firetreeAlex@firetree in the UK

13. Montane glacial melt Implications for agriculture Himalayas & Tibetan Plateau Feed all major rivers of China & India Necessary for rice production

14. Remedies Emission reduction Carbon sequestration Increasing albedo Adapting to change