1. GLOBAL WARMING QUANTIFYING GLOBAL CLIMATE CHANGE CE/AE/EnSci 524B

2. Are humans the culprit? ?=?=

3. Temperatures over the last 1000 years

4. Temperature change in North America

5. Water precipitation in North America

6. Source: National Resources Defense Council Heat balance factors in the atmosphere

7. The Greenhouse Effect

8. Heat balance over Earth

9. Blackbody radiation Both the Sun and Earth emit radiation as a function of temperature, according to the Stefan-Boltzmann Law (derived from Planck’s Law): E = σAT 4

10. The electromagnetic spectrum Progressively more heat is released at higher temperatures and wavelengths become shorter with higher temperatures

11. Maximum intensity at a temperature

12. Earth and solar radiation Calculate the power emitted by Earth and peak wavelength for Sun and Earth

13. Solar Spectrum

14. The real solar spectrum

15. Screening by the atmosphere

16. Vibration energy imparted to CO 2 molecules – released as infrared http://www.ucar.edu/learn/images/carbon.gif

17. Global trends in major greenhouse gases

18. The most important greenhouse gas - water

19. Climate change impacts

20. SOURCES OF GREENHOUSE GASES

21. Sources of greenhouse gases

24. Source Category 19901997199819992000200120022003 Landfills172.2147.4138.5134.0130.7126.2126.8131.2 Natural Gas Systems 128.3133.6131.8127.4132.1131.8130.6125.9 Enteric Fermentation 117.9118.3116.7116.8115.6114.5114.6115.0 Coal Mining81.962.662.858.956.255.652.453.8 Manure Management 31.236.438.8 38.138.939.339.1 Wastewater Treatment 24.831.732.633.634.334.735.836.8 Petroleum Systems 20.018.818.517.817.617.417.1 Rice Cultivation 7.17.57.98.37.57.66.86.9 Stationary Sources 7.87.46.97.17.36.76.46.7 Abandoned Coal Mines 6.18.17.27.37.76.96.4 Mobile Sources 4.84.03.93.63.43.12.92.7 Petrochemica l Production 1.21.61.7 1.41.5 Iron and Steel 1.3 1.2 1.11.0 Agricultural Residue Burning 0.70.8 0.70.8 Total for U.S. 605.3579.5569.3557.3554.2546.7542.3544.9 Methane Quantities Released by Different Sources in Tg

25. Anthropogenic Methane Sources

28. Greenhouse Gas Emissions By Gas (1997)

29. US Greenhouse Gas Emissions /capita & /$ GDP

30. Sources of Gas (1997)

31. US ENERGY CONSUMPTION BY ENERGY SOURCE

32. US ENERGY CONSUMPTION (Quadrillion BTU)

33. CO 2 EMISSIONS From FOSSIL FUEL COMBUSTION

34. END USE SECTOR EMISSIONS OF CO 2 FROM FOSSIL FUEL

35. SOURCES OF CH 4 (farts and belches)

36. SOURCES OF N 2 O

37. SOURCES OF HFCs, PCFs and SF 6

38. Quiz http://yosemite.epa.gov/oar/globalwarming.nsf/content/impacts.html