The accumulation of global warming coincides with a rise in the concentration of green house gases in the atmosphere. More heat and infrared reactions are trapped by the gaseous mantle around the globe which accelerates the pace of global warming.
The globe system and atmosphere is a state of dynamic equilibrium with the rate of absorption of solar radiation and its emission back to space as infrared and heat waves, which balance each other. Such gases and vapors which allow free passage to radiations are of relatively shorter wave length (2900-7000 A°) onwards, play very important role in maintaining surface temperature within a range in which heat can exist.
They form a blanket around the globe which checks the passage of infrared and heat wave from earth crust back to space and keep it warm. The word green house is nothing but a glass house which is constructed to grow specific tropical plants in cold areas of tropical climate.