Our Choice Al Gore. Assigned Chapters Introduction Chapter 1: What Goes Up Must Come Down Chapter 2:...
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Transcript of Our Choice Al Gore. Assigned Chapters Introduction Chapter 1: What Goes Up Must Come Down Chapter 2:...
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Our ChoiceAl Gore
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Assigned Chapters
• Introduction
• Chapter 1: What Goes Up Must Come Down
• Chapter 2: Where Our Energy Comes From and Where It GOES
• Chapter 14: Changing The Way We Think
• Chapter 16: Political Obstacles
• Chapter 18: Our Choice
Al Gore: Our Choice2
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Introduction
Al Gore: Our Choice3
• Serious damage, but we probably still do have time for recovery
• The solution: to make our choice to act now!
• The book “proposes” a solution to the climate crises
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• Note that the solution is not easy!
• Need “will” if we choose to solve the climate crises
• Positive “spillovers” for too many countries?
• Associated positive economic outcomes.
Al Gore: Our Choice4
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Carbon DioxideBurning of carbon-based fuels since the industrial revolution has rapidly increased concentrations of carbon dioxide, increasing the rate of global warming and causing anthropogenic climate change
Al Gore: Our Choice5
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• Need joint effort: households and businesses
• They add up and they reinforce commitment
• Role of active players
• The signs of the change we need are now beginning to appear all around us…. Can you name few?
• Dependency on “foreign oil”!
• Oil Peack?Al Gore: Our Choice6
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• Security crises
• Climate crises
• Economic crises
• “our dangerous over-reliance on carbon based fuels is at the core of all three of these challenges
• Obama’s steps toward building a renewable energy infrastructure
• Conflict?Al Gore: Our Choice7
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• Need to promote required incentives
• “in practical terms, the rescue of future generations must start right now”
• Next…. CH 1
Al Gore: Our Choice8
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WHAT GOES UP MUST COME FOWNCH. 1
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• Human civilization and environment are colliding!
• Deterioration of out atmosphere
• It is global and affecting every part of the earth
• The source of global warming
• The reflective problem
Al Gore: Our Choice10
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Main Sources of global warming
1. Carbon dioxide (CO2): 43%
2. Methane (CH4): 27%
3. Black Carbon: 12%
4. Other sources: 19%
• All are emitted from many human activities: transportation, farming, heating…
Al Gore: Our Choice11
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1. Carbon Dioxide
• The biggest global warming cause
• Mainly from burning of coal (heat and electricity), burning of oil-based products (gasoline, diesel, jet fuel…)
• Most discussions of how to solve the climate crises tend to focus on producing energy that do not produce CO2
• Another source (comes after fossil fuel) is land use changesland use changes
• Deforestation, burning of trees,…
• Try to reduce burning od fossil fuel and reduce deforstation Al Gore: Our Choice12
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Al Gore: Our Choice13
deforestation
Wild fires
Soil erosion
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2. Methane
• Although is smaller that CO2, over a 100 period, methane is more than 20 times strong as CO2 in its ability to trap heat in the atmosphere.
• Watch “What Goes Up: Greenhouse Gases”
• 50% occur in agriculture
• In agriculture most methane comes from livestock, livestock waste
• The remaining comes from oil and gas production…
Al Gore: Our Choice14
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3. Black Carbon
Al Gore: Our Choice15
Watch: The Menace of the Brown Cloud
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Black Carbon• Why it causes a particular threat
to India and China?
• More than 30% of black carbon comes from burring of fossil fuels (mainly diesel truck!)
• In areas with long dry seasons with no rainfall, black carbon concentration is high
• Watch and read: Cleaning the Air after the Great Smog of 1952
Al Gore: Our Choice16
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• The solution to global warming is as easy to describe as it is difficult to put into practice
• Emissions of the 6 kinds of air pollutants causing the problem must all be reduced
Al Gore: Our Choice17
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Next: Ch 2Where Our Energy Comes From and Where it Goes