Difference between revisions of "Greenhouse gas"

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Revision as of 16:32, 16 April 2008

It has been suggested that this article or section be merged with greenhouse effect. (Discuss)

A greenhouse gas is any gas which contributes to the greenhouse effect.

The most important greenhouse gas is water vapor. [1] Also important are carbon dioxide, methane, nitrous oxide, and ozone.[2]

The nature of a greenhouse gas is to pass visible light, i.e., incoming energy from the sun, but to be opaque to the infrared, i.e., heat energy being re-radiated outward from the earth's surface. This functions much like the glass on a man-made greenhouse, and serves to trap warmth at the surface and in the lower atmosphere.

References

  1. Water vapor has the largest greenhouse effect. (NASA)
  2. http://yosemite.epa.gov/oar/globalwarming.nsf/content/emissions.html