1 MET 12 Global Warming: Lecture 13 Energy Shaun Tanner San Jose State University Outline:   Energy use   Story of Stuff.

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Presentation transcript:

1 MET 12 Global Warming: Lecture 13 Energy Shaun Tanner San Jose State University Outline:   Energy use   Story of Stuff

2   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

Greenhouse Gas Emissions

CO 2 emissions per person

5 US CO 2 Emissions  Total emissions ~ 5,788.5 million metric tons  ~ 22 metric tons per person  Industry: 35%  Transportation: 33%  Residences: 18%  Commercial: 14%  1,600 million metric tons due to personal use (~33%)

6 Automobile fuel: 38 gallons per month Natural Gas: 15 therms per month Electricity: 190 Kilowatt-hours per month Airline Miles flown 147 miles per month Total:   Latest estimate ~   Kyoto allowance (for US): ~~   To stabilize climate (550ppm)   Average US Personal Energy Use (Per Person)

7 Automobile fuel: 38 gallons per month Natural Gas: 15 therms per month Electricity: 190 Kilowatt-hours per month Airline Miles flown 147 miles per month Total:   Latest estimate ~ 17,600 lbs of CO 2   Kyoto allowance (for US):   ~11,000 pounds   To stabilize climate (550ppm)   4,700 pounds Average US Personal Energy Use (Per Person)

8

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

10 What percentage of electricity generation comes from the burning of natural gas? 1.5% 2.10% 3.17% 4.61%

11 If you buy an electric car, what is the most likely energy source 1.Natural gas 2.Coal 3.Petroleum

Solutions require reductions in energy use…

Energy is used to make many things…

Apple Photo credit: Terry Nathan Apple Ipod 1 Energy Unit

How many energy units to make an iPod? 1.Between Between Between Between Between Between

Apple 1 Energy Unit Energy Units Photo credit: Terry Nathan Apple Ipod

MacBook Air inch MacBook Pro 17-inch MacBook Pro 15-inch MackBook Pro MacBook-2008 iMac (24 inch)-2011 iMac (20 inch)-2011 LED Cinema Display Mac Pro Mac Min iPhone 3GS iPhone 4S iPod nano iPod touch iPod shuffle Carbon Footprint of Apple products

Direct and Indirect Energy

19 Mitigation of climate change  Mitigation: –Steps taken to avoid or minimize negative environmental impacts.  Mitigation can include: –avoiding the impact by not taking a certain action; –minimizing impacts by limiting the degree or magnitude of the action; –rectifying the impact by repairing or restoring the affected environment

20 Story of Stuff 1.Extraction 2.Production 3.Distribution 4.Consumption 5.Disposal  Planned and perceived obsolescence  Connections with climate change

21 Story of Stuff Assignment (Due Nov 1 st ) Write a paragraph describing connections between the story of stuff and global warming Also in your paragraph, include the pros and cons of recycling.