Green house effect is a process by which radioactive energy leaving a planetary surface is absorbed by some atmospheric gases called green house gases. This energy is transferred to other components of the atmosphere and is also radiated backwards. The mechanism of this effect is that the warmth is isolated inside the structure so that the heat is not lost. Green effect was discovered by Joseph Fourier in 1824. Global warming is the result of green house effect due to excessive emission of green house gases. This is also caused due to human produced increases in atmospheric green house gases.
The principle mechanism can be explained as follows. The earth receives energy from sun in the form of sunlight. Light is absorbed by earth's surface and re-radiated. The heat that is retained in earth's surface and lower atmosphere increases the temperature and results in global warming.
The four major green house gases are:
1. Water vapor
2. Carbon dioxide
3. Methane
4. Ozone
Strengthening of this condition through human activities is known as oranthropogenic. This increases carbon dioxide level in atmosphere and adversely affects the living things. Besides earth, Mars, Venus and the moon namely Titan exhibits effect. Global warming has been a threat since many years. Deforestation is one of the main causes as it increases amount of carbon dioxide level in atmosphere.
Even though people are aware of this phenomenon, there are plenty of them who act as though they are not aware of the depleting atmosphere of the earth. Thus they get involved into those practices which can certainly disturb the atmospheric balance. Some of the deeds include polluting the air, water and other resources, deforestation, using electronic good known to cause harm to our peaceful environment and so on. Therefore, it is very important to make the society aware about the bad effects and save our earth as well as ourselves.
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