What is Climate Change?. The Global Climate is changing. Surface temperatures, precipitation, sea...
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Transcript of What is Climate Change?. The Global Climate is changing. Surface temperatures, precipitation, sea...
What is Climate Change?
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What is Climate Change?• The Global Climate is changing.• Surface temperatures, precipitation,
sea level, ice • Greenhouse gases are increasing.• Sometimes also called Global
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Surface Temperatures are Rising:
Precipitation Patterns are Changing
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Summer Winter
Sea Levels are Rising and snow cover is decreasing
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Why is this Happening?
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Greenhouse Gas Concentrations are rising
Why are Greenhouse Gases Important?
• “Blanket” that insulates the earth• Without greenhouse gases surface temperatures would be 60º F
colder than they are now.• This is because they are responsible for a phenomenon called “The
Greenhouse Effect”
• Examples of greenhouse gases are: water vapor (H2O), carbon dioxide (CO2) and methane (CH4).
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What is the Greenhouse Effect?
Similar to your car on a hot day!
• This phenomenon is similar to the warming that occurs in an automobile parked outside on a sunny day.
• During the day, the sun’s energy passes through the car’s windshield
• Energy re-radiated from the warm car cannot pass through the windshield, and the car warms up - a lot!
So how are humans enhancing the Greenhouse
effect?• Burning fossil fuels puts
more greenhouse gases (like CO2) into the atmosphere.
• Increasing the concentration of these gases blocks the escape of infrared radiation.
• Too much = Climate Change.
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The atmosphere as a bathtub
• Fossil fuel tap
• Bathtub represents atmosphere
• Drain represents ocean and land
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Climate Change: Huh?
• Where?• Who?
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What are the Solutions?
• Individual?• Community?• State?• Country?• World?
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Since 1950: Carbon Emissions Tripled
2050: Carbon Emissions Could Double Again!
Triple the Emissions?!
Significant Global Warming!
Can We Stop It?
What If?
Stabilization Triangle
Cut Carbon Emissions
Large Emission Cuts Needed: OUCH!
We Have the Technology!
One Wedge: Cut 1 Billion Tons Per Year
15 Strategies
Work Together
It Can Be Done!
Choose 7 Strategies
Wedges
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Stabilization Wedges
• 15 ways to cut carbon• Efficiency and
Conservation• Fossil Fuel Based
Strategies• Nuclear Energy• Renewables and
Biostorage
Stabilization Wedges: A Concept and Game
• Learn about technologies currently available
• Understand scale of effort needed to address carbon and climate situation
• Negotiate solutions
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Judge/Assess
• Economic• Social• Environmental• Political
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