Class 15b: Global climate change

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Class 15b Global climate change
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Greenhouse effect

• Natural warming effect

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What is global warming?

• Global worldwide, not universal
• Global climate change more accurate

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Climate research

• How do we know about past climates?

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Is global warming happening?
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Is global warming unusual?
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Whats causing global warming?
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Whats causing global warming?
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How much more warming?

• 2.5 - 10F by 2100 5.4F at current emission
  rates

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So what for the weather?

• More climatic variability

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So what for ecosystems?

• Northward climate shift of 90-350 miles

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So what for the oceans?

• Thermal expansion of warmer water
• Melting ice sheets, glaciers

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So what for the oceans?
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So what for cities?
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So what for countries?
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Solutions to global warming

• Mitigation reduce effects
• Adaptation adapt to effects

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Politics of global warming
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Politics of global warming