class 15b: global climate change. greenhouse effect natural warming effect

Download Class 15b: Global climate change. Greenhouse effect Natural warming effect

Post on 21-Dec-2015

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  • Slide 1
  • Class 15b: Global climate change
  • Slide 2
  • Greenhouse effect Natural warming effect
  • Slide 3
  • What is global warming? Global = worldwide, not universal Global climate change more accurate
  • Slide 4
  • Climate research How do we know about past climates?
  • Slide 5
  • Is global warming happening?
  • Slide 6
  • Is global warming unusual?
  • Slide 7
  • Whats causing global warming?
  • Slide 8
  • Slide 9
  • 2.5 - 10F by 2100; 5.4F at current emission rates How much more warming?
  • Slide 10
  • More climatic variability So what for the weather?
  • Slide 11
  • Northward climate shift of 90-350 miles So what for ecosystems?
  • Slide 12
  • Thermal expansion of warmer water Melting ice sheets, glaciers So what for the oceans?
  • Slide 13
  • Slide 14
  • So what for cities?
  • Slide 15
  • So what for countries?
  • Slide 16
  • Mitigation: reduce effects Adaptation: adapt to effects Solutions to global warming
  • Slide 17
  • Politics of global warming
  • Slide 18