Reducing Global Warming Essay - 1522 Words

Reducing Global Warming Our planet, Earth, is surrounded by a shield of atmospheric gases consisting primarily of nitrogen and oxygen. The sun produces radiation which is most intense at short wavelengths. The atmosphere is almost transparent to this radiation and is absorbed by the earth’s surface. When the land and sea are warm they radiate the energy they have absorbed at a longer wavelength, some is reabsorbed and re-radiated back to earth by atmospheric gases. Although eventually escaping into space, it is retained long enough to warm the atmosphere. This is the greenhouse effect, and the gases causing it are greenhouse gases. Without global warming, the earth’s†¦show more content†¦When forests are cleared or burnt CO2, methane and nitrous oxide are released into the atmosphere. Each year, deforestation contributes 23-30 percent of overall CO2 in the atmosphere by countries such as Brazil, Indonesia, Burma, Mexico and Thailand. Therefore, while more and more carbon dioxide is being released into the atmosphere, there are less and less forests to remove it. Deforestation both releases huge amounts CO2 into our atmosphere and destroys our means of absorbing and storing this substance. The destruction of the earths forests not only contribute to global warming, but also undermine the long-term ability of the Earth’s atmosphere to neutralize green house gases. The Earth’s defence mechanism against pollutants are called ‘trace radicals;’ gas molecules which interact with greenhouse gases, making them harmless. There are limited quantities of these trace radicals in the atmosphere, and as more greenhouse gases are released more trace radicals are used up. This diminishes the Earth’s ability to stabilize the atmosphere. The causes of deforestation are varied. The most important include logging, the conversion of forested land for agriculture and cattle raising, urbanization, mining and oil exploitation. 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