1. 10.4 Global Climate Change Adaptation and mitigation

2. Warm-up Essential Question What can we do about climate change?
What adaptations and mitigations will need to happen with a changing climate?

3. Dealing with Global Climate Change
To avoid the worst of climate change, CO2 levels must be stabilized at 550ppm
25% higher than current levels (408ppm)
Two ways to attempt to manage climate change, both will be necessary
Mitigation
Focuses on limiting greenhouse gas emissions to moderate global climate change
Adaptation
Focuses on learning to live with to the environmental changes and societal consequences brought about by global climate change

4. Dealing with Global Climate Change- Relationship Between Mitigation and Adaptation

5. Dealing with Global Climate Change- Mitigation
Locate/invent alternative fuels to fossil fuels
Increase efficiency of cars and trucks
Sequestering (capture and store) carbon before it is emitted
Plant and Maintain trees to naturally sequester carbon
Take care of the ocean
Laws and incentives to be cleaner

6. Paris Accords (agreement)
A signed agreement between the nations of the world to reduce carbon dioxide emissions
The United States is the ONLY country that is no longer part of this (President Trump removed the US from the agreement – why?)

7. Dealing with Global Climate Change- Adaptation Sea level
Rising sea levels and coastal populations
Move inland
Construct dikes and levees
NYC sewer line

8. Dealing with Global Climate Change- Adaptation Extreme Weather
Levees and dikes (flood control)
Better evacuation for storms
More vegetation for extreme rain to prevent runoff/ mudslides
Alternative sources of water for droughts

9. Dealing with Global Climate Change- Adaptation farming
Less land to farm on
Lower crop yields
More pests
Less water
Worse soil
More people
shifting agricultural zones

10. Dealing with Global Climate Change- Adaptation ozone depletion
UV damage to DNA
Skin cancer
Cataracts
Suppression of immune system
Ecosystem:
Primary producers
Food chains
Development in aquatic larva

11. Managing ozone depletion
Montreal protocol, Sept 1987– Production of CFC elimination
Economic gap
Replacements: HFC and HCFC
Shorter lifetime, less reactive
Collection and reuse (no venting)
Expensive replacements