met 168w global climate change – lecture 1 transportation dr. eugene cordero san jose state...
TRANSCRIPT
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MET 168W Global Climate Change – Lecture 1
Transportation
Dr. Eugene Cordero
San Jose State University
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Greenhouse Gas Emissions
Transportation~ 30% of all end use emissions
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Transport
Climate Solutions
FoodHousing
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Burrito (Beef): 850 calories: $6.10
Burrito (Veggie): 830 calories: $5.75
CO2: 3.8 kg
CO2: 0.5 kg
CO2 per dollar: 636
CO2 per dollar: 94
Calories per dollar: 140
Calories per dollar: 145
Burrito
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How far can I go on a burrito?
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How far can I go on a burrito?
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Driving 55
In 1974 55 mph national speed limit law passed
2% reduction in highway fuel consumption 2000-4000 lives saved annually Law altered in 1987 and repealed in 1995
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Miles per gallon
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Highway Speed Limits
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Fuel efficiency versus speed
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Assignment
Campaign to reduce highway speed limit
1. Calculate fuel and CO2 emissions for bay area trip to Lake Tahoe (and return) driving at a speed of 55 mph and 75 mph.
2. Calculate equivalent measures: plastic bottles, plastic bags, burritos and iPods
3. Write a pitch (1 paragraph) advocating for speed limit reduction
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Data San Jose to Lake Tahoe = 230 miles Avg vehicle: 35 mpg @ 55 mph Avg vehicle: 25 mpg @ 75 mph 1 gallon of gas burned = 20 lbs of CO2 1 water bottle ~ 1.7 lbs of CO2 1 plastic bag ~ 0.14 lbs of CO2 1 iPod ~ 50 lbs of CO2 1 veggie burrito ~ 1.1 lbs of CO2 1 beef burrito ~ 8.4 lbs of CO2