8.1 Green house effect around the earth

2.1 Pollutant
2.2 Contaminant
2.3 Source
2.4 Sink
2.5 Receptor
2.6 Threshold limit value (TLV)
2.7 Flow sheet of Environmental pollution process
2.8 Atmospheric Pollution
2.9 Tropospheric pollution or Air pollution

3.1 Primary pollutants
3.2 Particulate Matter
3.3 Inorganic gases
3.4 Secondary Pollutants
3.5 Major air pollutants

6.1 Role of Ozone Layer
6.2 Depletion of Ozone Layer

7.1 Chemistry of acid rain
7.2 Harmful effect of acid rain

8.1 Green house effect around the earth
8.2 Advantages of green house effect
8.3 Harmful effects of green house effect
8.4 Water Pollution

10.1 Control of water pollution
10.2 Land Pollution
10.3 Pesticides
10.4 Control of soil pollution
10.5 Green Chemistry: A new route to protection of environment

Atmosphere around the earth acts like a glass of the green house chamber. The gases present in the atmosphere which cause green house effect are referred to as green house gases. The various green house gases are:

$C{O_2},\,{H_2}O$ vapours, chlorofluoro carbons and oxides of nitrogen.

The green house gases in the atmosphere form a thick cover around the earth. The earth receives a large amount of energy from the sun. The IR radiations coming from sun are not absorbed by atmospheric gases. The earth absorbs these IR radiations of short wavelength. As a result of this the temperature of earth stands rising. Eventually, earth starts emitting infrared radiations of longer wavelengths. The partially radiated infrared radiations from the earth are absorbed by $C{O_2}.$ This results in excessive heating of earths atmosphere.

The heating of atmosphere due to absorption of infrared radiations by $C{O_2}$ and other gases is called green house effect.