2. The atmosphere is changing Observed impacts of climate change What can we project for the future

7. IPCC 2013

9. CO2H2OCH4 Clouds Land Use Change Aerosols CO2H2OCH4 Clouds Land Use Change Aerosols

10. Chemical composition Radiative forcing Climate proxies Keeling curve

12. There is a 95% certainty that human activities are responsible for global warming CO2 is at an “unprecedented” level not seen in the past 800,000 years Sea level is set to continue to rise at a faster rate than over the past 40 years Over the last 20 years, the Greenland and Antarctic ice sheets have been melting and glaciers have receded in most parts of the world Key findings from the Fifth Assessment Report (AR5)

13. Sea LevelSevere StormsOcean Acidification Glaciers and Snow cover Precipitation CyclesHeat Waves

14. These graphs show the average annual and decadal surface temperatures IPCC 2013

22. Scientific Visualization Studio, NASA Goddard Space Flight Center average minimum extent (1979-2010)

23. IPCC 2013

25. Climate trend Heat capacity Arctic “minimum” Carbon sinks

29. IPCC 2013

33. High emissions scenario

34. IPCC 2013 High emissions scenarioLow emissions scenario

36. IPCC 2013

37. Emission scenarios Baseline Model Projection

38. GlobalRegionalLocal AcademicEnergyBuilding Transportation Food Production Adaptation

39. IPCC, 2013: Summary for Policymakers. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Stocker, T.F., D. Qin, G.-K. Plattner, M. Tignor, S. K. Allen, J. Boschung, A. Nauels, Y. Xia, V. Bex and P.M. Midgley (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA. Available from http://www.ipcc.ch/pdf/assessment- report/ar5/wg1/WG1AR5_SPM_FINAL.pdf (accessed February 14, 2014)http://www.ipcc.ch/pdf/assessment- report/ar5/wg1/WG1AR5_SPM_FINAL.pdf Ramaswamy, V., O. Boucher, J. Haigh, D. Hauglustaine, J. Haywood, G. Myhre, T. Nakajima, G. Y. Shi, and S. Solomon. 2001. Radiative forcing of climate change, Climate Change 2001: The Scientific Basis, Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change JT Houghton, et al.: 349–416.