1. BAESI – Global Warming Carbon Footprint Dr. Eugene Cordero Department of Meteorology and Climate Science

3.  Obviously, one of the main issues related to climate change is the burning of fossil fuels  Thus, energy use, and the continuing demand for energy are central to the challenges of climate change. Energy and Climate Change

4. CA CO 2 Emissions (per person)  22,941 lbs CO2 per person  Annual usage:  Electricity Usage: 7,032 kWh  Natural Gas Usage: 422 therms  Vehicle Usage: 571 gallons per person. http://www.pge.com/includes/docs/pdfs/about/environment/calculator/assumptions.pdf Global Average: 8,750 lbs CO2 per person

5. Greenhouse Gas Emissions Agriculture ~ 20-25% of all emissions

6. CO 2 emissions per person

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8. 8 1.What percentage of electricity generation comes from the burning of natural gas? 2.What percentage of transportation energy comes from natural gas burning? 3.What percentage of transportation energy use comes from coal? 4.If you buy an electric car, what is the mostly likely source of energy? 5.Where does most residential energy come from? Questions

9. Emissions of heat trapping gases

10. Indirect emissions

11. Embodied Energy

12. Apple 1 Energy Unit100-250 Energy Units Photo credit: Terry Nathan Apple Ipod

13. MacBook Air -2008 13-inch MacBook Pro 17-inch MacBook Pro 15-inch MackBook Pro MacBook-2008 iMac (24 inch)-2008 iMac (20 inch)-2008 LED Cinema Display Mac Pro Mac Min iPhone 3G iPhone 3GS iPod nano iPod touch iPod shuffle Carbon Footprint of Apple products

14. Role of Agriculture on Carbon Emissions

16. Growing Food U.N. Food and Agriculture Organization, 2004 Methane 14-18% of all emissions due to livestock

17. Carbon Footprint of Food + Animal related methane emissions

20. Carbon Showdown vs

21. Emissions from Transportation  Annual transportation (USA) –9,000 average passenger car miles Toyota Prius (50 mpg) Chevrolet Cobalt (28 mpg) Ford F-Series (13 mpg) US Dept. of Transportation 1.8 tons/yr 3.5 tons/yr5.2 tons/yr

22. Food: Three Diets  High: – 38% animal products – All red meat  Normal: – 28% animal products – Mix of red meat, poultry and fish  Low: –18% animal products –Chicken instead of red meat

23. Auto - Diet Comparison

25. Carbon Showdown vs Don’t eat a hamburger in a hummer

26. vs Vegan

27. Auto - Diet Comparison

28. Carbon Footprint of US Food 83% 5% 4% 7% Weber and Matthews 2008

29. Burrito (Beef): 850 calories: $6.10 Burrito (Veggie): 830 calories: $5.75 CO 2 : 3.8 kg CO 2 : 0.5 kg CO 2 per dollar: 636 CO 2 per dollar: 94 Calories per dollar: 140 Calories per dollar: 145 Burrito

30. Transport Climate Solutions Food Housing

32. We can’t change what we don’t measure  Ecological Footprint – Good surrogate for carbon footprint – Broad assessment (housing, transport, food) – Units of measure are acres of land – Component of footprint is land required to absorb waste (such as CO2) http://www.myfootprint.org/

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34. 34 Ecological Footprints l The amount of ecologically productive land used by individuals, cities, countries, etc. l Production and use of goods and services involve land use: have ecological footprints

35. 35 Carbon Footprint

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37. 37 Ecological Footprint

38. Ecological Footprint Calculators l Myfootprint.org (We’ll use this one today) l Footprintnetwork.org/calculator Other related info: www.thestoryofstuff.comwww.thestoryofstuff.com (Very provocative video on consumption) Sustainable energy without the hot air: (My favorite numbers book of the year!) http://www.withouthotair.com/ http://www.withouthotair.com/

39. Activity  Pair into teams of two  Jointly compute your ecological footprint (average your results)  Compare to average American and speculate why they are different  Develop a strategy for how you might reduce your footprint by 20% for a week. Use the calculator to guide your reductions.  User: dilbert Pass: Dogbert7 (log onto local machine, not METR) http://www.myfootprint.org/