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Radiant energy arrives through sunlight, which is remitted by the surface at infrared wave lengths as heat. Carbon dioxide and water vapour in the atmosphere absorb this infrared radiation and act as a blanket, with net effect atmospheric temperature rise.
In the Earth more deforestation and burning of fossil fuel enhances water vapour, carbon dioxide, ethane, so there is likely to be a gradual increase in the mean air temperature of several degrees, which may result in melting of polar ice and a rise in mean sea level. The rise in sea level will have immediate impact on coastal life such as aquaculture, agriculture and forestry.
This may also result substantive loss of life, submergence of areas, destruction of property. The global process of industrialization has brought such a change in the situation. This warming of Earth due to greenhouse effect is a challenge to human civilization.
Ozone is a form of oxygen having molecules The gas Ozone is concentrated on the stratosphere. It is produced by the action of ultraviolet light from the sun in the air. The ozone layer shields the Earth from harmful effects of solar ultra violet radiation, but can be decomposed by complex chemical reactions, notably involving chlorofluorocarbons CPAs.
Inthe Montreal Protocol was signed by around 40 countries to limit their use, with the intention that by worldwide consumption of CFCs should be 50 percent of levels. Reports that short-lived holes have been observed above the Arctic have led to renewed efforts in Europe to reach agreement on accelerated reduction in CFC consumption.
The Antarctica hole was estimated to be 28 mn sq. The Cambridge paperback encyclopedia. In India under Environment Protection Actit was decided that industries using ODS would be discouraged, commercial banks have instructed not to issue finance for industries those who would use ODS technologies.
Environmental protection became a key issue at Stockholm conference, in However, as per existing commitments, India is not required to adopt any restrictions and limitation of greenhouse gas emissions.
But later protocol such as Kyoto conference called for joint efforts of developed and developing economies to cut greenhouse gas emissions. Empirical data suggests that, Globally SPM has increased the level of death; hypertension in Mexico and Bangkok, Solid wastes from many cities remains uncollected, solid degradation and soil erosion have caused decline in GNP of many countries.
Deforestation in all the countries, particularly tropical regions increased ultraviolet ray radiation.
Ultraviolet radiation produces petrochemical smog out of nitric oxides and unburnt hydrocarbons. Thus environmental degradation has been causing serious problems for developed as well as developing economy.Nov 24, · Essay about green house effect.
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Global Warming and the Greenhouse Effect The greenhouse effect, in environmental science, is a popular term for the effect that certain variable constituents of the Earth's lower atmosphere have on surface temperatures. The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere.
If a planet's atmosphere contains radiatively active gases (i.e., greenhouse gases) they will radiate energy in all directions. The Green house effect refers to the point when sunlight reaches the surface of earth, some of the light is absorbed and warms the earth.
Because the Earth's surface is much cooler than the sun, it radiates energy at much longer wavelengths than the sun. Essay on The Greenhouse Effect The greenhouse effect plays a crucial part in preserving the environment on earth.
The use of chemicals given off from different material objects such as cars and aerosol cans throw off the greenhouse effect.