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week 14 lab/lecture

                                    Week14 Lab/Lecture

  • Description of what we did in the lab?
    • Greenhouse effect
      • Some solar radiation is reflected by the earth and the atmosphere. 
      • Most radiation is absorbed by the Earth's surface and warms it. 
      • Infrared radiation is emitted by the Earth's surface. 
    • Earth 'blanket' and light 
      • certain gases act like a blanket in our atmosphere
    • Greenhouse gas
      • a gas that absorbs and re-emits infrared light. 
  • The big question addressed in the lab? 
    • Climate Change?
    • Greenhouse gasses? 
    • Describe how the molecules interacted with the visible and infrared photons
    • What will happen if we continue to increase CO2?
  • A description of what you learned in Thursday's lecture.
    • Sources of Natural Variability 
      • Solar and volcanic are two dominant natural contributors to global climate changed 
    • What is the albedo effect?
    • How does it affect climate? 
    • How does the GH effect interact with the albedo effect?
    • Is the albedo effect a positive or negative feedback loop?
    • Albedo Effect
      •  Reflectivity of a surface; how much radiation is reflected vs. absorbed 
      • COLOR has a major influence on albedo 
      • high albedo means something is more reflective, a low albedo means it is less reflective/will absorb more radiation 
    • Snowball Earth
      • What effects does this have on the albedo across the entire planet?
      • How might the planet warm back up during an ice age?


  • Answer questions about the weekly textbook reading:
  • What did you learn?
    • July 2019 was the hottest month on record since they began record keeping in 1880. 
    • Arctic and Antarctic sea ice levels were both at record lows for the month of July. 
  • What was most helpful?
    • Clips of showing the ice growing younger and thinner 
  • What do you need more information on?
    • Everything 

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