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Climate Change

Climate Change. To change Earth’s radiation balance, we must change…. incoming solar radiation albedo greenhouse gas concentrations. Cryosphere. snow covered regions glaciers ice caps sea ice permafrost . Cryosphere and Time Scales. Changes in River & Lake Ice. long record

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Climate Change

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  1. Climate Change

  2. To change Earth’s radiation balance, we must change… • incoming solar radiation • albedo • greenhouse gas concentrations

  3. Cryosphere snow covered regions glaciers ice caps sea ice permafrost

  4. Cryosphere and Time Scales

  5. Changes in River & Lake Ice • long record • minor volume, but impacts flooding • later freeze up, earlier thaw • insufficient data on thickness

  6. Arctic Sea Ice • 7-15 x 106 km2 • ~ 2.7%/decade decline since 1978 • < 1m decline in thickness, central Arctic 1987-97

  7. Antarctic Sea Ice = 3-19 x 106 km2

  8. Global CO2 Emissions : 1752-2006

  9. The Carbon Cycle

  10. Glacial Melting

  11. Glaciers and Ice Caps

  12. Summary • 1961-2003, global temperature has risen by 0.10o C • 1955-1998, global freshening in sub-polar • circulation changes? • Inorganic carbon increase • Sea level rise 1961-2003

  13. Ocean heat content 0-700m

  14. Chlorofluorocarbon (CFC) • is an organic compound that contains carbon, chlorine, and fluorine.

  15. Greenhouse Gasses 1850-2000

  16. Vostok Ice Core Data

  17. Ice Core Data

  18. Potential Sea Level Rise in North America

  19. Thermohaline Circulation

  20. Solar Flares Effect Earth’s Climate • http://en.wikipedia.org/wiki/Solar_cycle

  21. Climate Change Websites • http://www.epa.gov/climatechange/emissions/co2_human.html

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