Climate change

Climate change

Climate
1. Fluctuated drastically
  1. Species have
    1. Faltered
    2. Benefied
    3. Adapted
    4. Died
  2. Ice ages
  3. Epochs of steamy heat
1995
1. The Intergovermental Panel on Climate Change (IPCC)
  1. Concluded that
    1. "There is a human influence on Global Climate"
Effects
1. Global warning
  1. Green house gases
    1. Trapped heat in the atmosphere
      1. Temperature has risen a half degree Celsius (1 degree Fahrenheit)
    2. Greenhouse effect
      1. Without the atmosphere
        Heat would strike the earth
        The atmosphere traps the majority of the heat
        Gases absorb the infrared radiation
        They heat up and some heat radiates back to the surface
        More water evaporates
        There is more vapor in the atmosphere
        The atmosphere becomes warmer
        And be reflected back into the space as infrared waves
2. Change in climate patterns
3. Changes in farming
What causes climate change?
1. Solar Input
  1. Solar energy hits the upper atmosphere
    1. One third of it is reflected back into the space
      1. The rest of the energy:
        Warms Earth
        Fuels its weather engine
2. The Atmosphere
  1. A balance of gases gives the Earthe an average temperature
    1. Greenhouse gases :
      1. Absorb heat energy
      2. Re-radiate back a portion of it
3. The Oceans
  1. Cover the 70% of the Earth's surface
    1. They are the biggest source of water vapor
      1. When warm water collects in one place
        evaporation an cloud build-up increase
        Marine organisms consume CO2
4. The Water Cycle
  1. Higher air temperature causes:
    1. Melting of ice
    2. Increased water evaporation
      1. Leads to cloud formation
        Causes a cooling effect
      2. Water vapor is the most potent greenhouse gas
5. Ice and Snow
  1. Reflect sulight back into space
  2. Ice melting takes heat from the ocean
  3. That cools the planet
6. Land Surface
  1. Topography
  2. Land use
    1. Major effects on climate
      1. Mountains block clouds and create dry places
      2. Slpoing land has more water runoff
7. Human Influences
  1. Magnify warming effects
  2. Aerosols reflect sunlight and have cooling effects
  3. Farming and landfills rise methane level
  4. Fuel combustion rises CO2
8. Clouds
  1. They cool Earth
    1. Reflecting solar energy
  2. They warm Earth
    1. Trapping the heat that radiates up from the surface

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