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Class 15b: Global climate change

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Class 15b: Global climate change Greenhouse effect Natural warming effect What is global warming? Global = worldwide, not universal Global climate change more ... – PowerPoint PPT presentation

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Title: Class 15b: Global climate change


1
Class 15b Global climate change
2
Greenhouse effect
  • Natural warming effect

3
What is global warming?
  • Global worldwide, not universal
  • Global climate change more accurate

4
Climate research
  • How do we know about past climates?

5
Is global warming happening?
6
Is global warming unusual?
7
Whats causing global warming?
8
Whats causing global warming?
9
How much more warming?
  • 2.5 - 10F by 2100 5.4F at current emission
    rates

10
So what for the weather?
  • More climatic variability

11
So what for ecosystems?
  • Northward climate shift of 90-350 miles

12
So what for the oceans?
  • Thermal expansion of warmer water
  • Melting ice sheets, glaciers

13
So what for the oceans?
14
So what for cities?
15
So what for countries?
16
Solutions to global warming
  • Mitigation reduce effects
  • Adaptation adapt to effects

17
Politics of global warming
18
Politics of global warming
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