Global warming and_the_greenhouse_effect

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Greenhouse Effect/Global Warming Notes

Greenhouse Effect/Global Warming Notes

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  • 1. MS. KOPCHICK’S EARTH SCIENCE CLASS GLOBAL WARMING AND THE GREENHOUSE EFFECT
  • 2.
      • Global warming refers to a rise in the temperature of the surface of the earth
      • An increase in the concentration of greenhouse gases leads to an increase in the magnitude of the greenhouse effect . (Called enhanced greenhouse effect)
    What is the difference between Global Warming and the Greenhouse Effect?
  • 3.
    • GREENHOUSE GASES REGULATE OUR CLIMATE BY TRAPPING HEAT AND HOLDING IT IN A KIND OF WARM-AIR BLANKET THAT SURROUNDS THE PLANET. WITHOUT IT, OUR AVERAGE TEMPERATURE WOULD BE COLDER BY 54 DEGREES FAHRENHEIT
    • WAAAAAAAAAAAAAAY TO COLD TO SUSTAIN OUR CURRENT ECOSYSTEM!
    The Greenhouse Effect is a GOOD THING!
  • 4.  
  • 5.
    • THE PROBLEM WITH THE GREENHOUSE EFFECT IS WHEN HUMAN ACTIVITIES DISTORT AND ACCELERATE THE NATURAL PROCESS BY CREATING MORE GREENHOUSE GASES IN THE ATMOSPHERE
    The “Enhanced” Greenhouse Effect
  • 6.  
  • 7.
    • CARBON DIOXIDE (CO 2 )
      • Source: Fossil fuel burning, deforestation
      • Anthropogenic increase: 30%
      • Average atmospheric residence time: 500 years
    • METHANE (CH 4 )
      • Source: Rice cultivation, cattle & sheep ranching, decay from landfills, mining
      • Anthropogenic increase: 145%
      • Average atmospheric residence time: 7-10 years
    Greenhouse Gases
  • 8.
    • NITROUS OXIDE (N 2 O)
      • Source: Industry and agriculture (fertilizers)
      • Anthropogenic increase: 15%
      • Average atmospheric residence time: 140-190 years
    • WATER VAPOR (H2O)
    • THE MOST IMPORTANT GREENHOUSE GAS!!
    • SOURCES: EVAPORATION
    • ANTHROPOGENIC INCREASE: 35 %
    Greenhouse Gases
  • 9.
    • BURNING NATURAL GAS, COAL, OIL RAISES THE LEVEL OF CO2 IN THE ATMOSPHERE
    • SOME FARMING PRACTICES AND LAND-USE CHANGES INCREASES THE LEVELS OF METHANE AND NITROUS OXIDE
    • MANY FACTORIES PRODUCE LONG LASTING INDUSTRIAL GASES THAT DO NOT OCCUR NATURALLY
    • AND THOSE GASES ENHANCE THE GREENHOUSE EFFECT
    More greenhouse gases means more heat trapped which increases the Earth’s temperature
  • 10.
    • DEFORESTATION: TREES USE CO2 AND GIVE OFF O2 IN WHICH HELPS TO CREATE THE OPTIMAL BALANCE OF GASES IN THE ATMOSPHERE. AS MORE FORESTS ARE LOGGED FOR TIMBER OR CUT DOWN TO MAKE WAY FOR FARMING, THERE ARE FEWER TREES TO PERFORM THIS CRITICAL FUNCTION. IN ADDITION WHEN THIS WOOD IS BURNED IT PRODUCES EVEN MORE CO2 IN THE ATMOSPHERE .
    Even more ways these gases are added to the atmosphere!
  • 11.
    • AS MORE PEOPLE USE FOSSIL FUELS FOR HEAT, TRANSPORTATION AND INDUSTRY, THE LEVEL OF GREENHOUSE GASES CONTINUE TO INCREASE. AS MORE FARMING OCCURS TO FEED MILLIONS OF NEW PEOPLE, MORE GREENHOUSE GASES ENTER THE ATMOSPHERE
    Population Growth
  • 12.
    • ICE
    How do scientists measure the increase of greenhouse gases?
  • 13.  
  • 14.  
  • 15.  
  • 16.
    • Increased Temperature
    • Rising Sea Level
    Effects of Global Warming due to the unbalance of greenhouse gases
  • 17.
    • Habitat Damage and Species Extinction
    • Changes in water supply; contamination of fresh water
    Effects of Global Warming due to the unbalance of greenhouse gases
  • 18.
    • More severe storms; hurricanes and floods
    • Droughts, changes in weather patterns
    Effects of Global Warming due to the unbalance of greenhouse gases
  • 19.
    • Portage Glacier Alaska then….
    • Portage Glacier Alaska now….
    Some Proof of Global Warming
  • 20.
    • Colorado River, Az
    • June 2002
    • Colorado River, Az December 2003
    Some Proof of Global Warming
  • 21. What can we do to help reduce greenhouse gas emissions?
  • 22.
    • Wind Power
    • Solar Power
    Educate and Use!!
  • 23.
    • Fuel Efficient Cars
    • Compact
    • Fluorescent
    Educate and Use!!
  • 24.
    • TURN OFF YOUR COMPUTER OR THE TV
    • WHEN YOU’RE NOT USING IT.
    • TAKE SHORTER SHOWERS. HEATING WATER USES ENERGY.
    • KEEP ROOMS COOL BY CLOSING THE BLINDS, SHADES, OR CURTAINS.
    • TURN OFF THE LIGHTS WHEN YOU LEAVE A ROOM.
    • USE COMPACT FLUORESCENT BULBS
    Today you can….
  • 25.