Name a component of atmosphere which causes greenhouse effect
Answers
The green house effect, first discovered by Joseph Fourier in 1824, and first investigated quantitatively by Svante Arrhenius in 1896, is the radioactive forcing process by which an atmosphere warms a planet The name is from the similar effect which greenhouses utilize in order to facilitate plant growth.
Presently there is general acceptance by the scientists that the average earth temperature is increasing due to green house effect.
The earth receives an enormous amount of solar radiation. The direct solar radiation flux just above the atmosphere, averages about 1366 watt per square meter or 1.740 X 1017
watt after being distributed over the entire earth, which is much more than the power generated by human activities. Most of the solar radiation leaves the earth and the amount of energy from the sun that is absorbed by the earth is small.
Certain gases such as CO2
, CFCs in the upper atmosphere trap infrared radiation preventing it from being rejected into the Space and these gases consequently enhance a radiative forcing effect that contributes to the global warming. The degree of the green house effect is dependent primarily on the concentration of green house gases in the earth’s atmosphere.
The earth will be warmer with gases in the upper atmosphere than it would be without them. The warming effect of these gases over time depends upon their quantity, their chemical and radioactive properties, their lifetime in the atmosphere and the time required to ascend into Stratosphere
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