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The Natural Greenhouse
THE NATURAL GREENHOUSE EFFECT INCOMING! The sun's energy comes to earth as solar radiation in short and medium wavelengths.
SOME GETS REFLECTED 31% of the incoming visible light is reflected back into space
AND SOME GETS ABSORBED 69% sun's visible light that gets through
AND RELEASED LATER Heat absorbed by the surface is radiated back as long wave infrared (IR) radiation. This warms the air immediately above the earth's surface. TO BE TRAPPED AGAIN- FOR A WHILE Water vapor and other greenhouse gases in the atomosphere absorb this IR radiation holding it in. The trapped heat is also radiated up, down and all around. Eventually it disperses to outer space. This is called the GREENHOUSE EFFECT because the atmosphere acts like the glass in a greenhouse. It helps to trap in the sun's heat, slowing its release into the colder space. However, too much or too little of a good thing can be bad for you. We need just the right balance of GHGs in the atmosphere. This means that more heat is being trapped by the atmosphere and, our greenhouse is starting to get a little too warm for comfort. Conclusion:
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