‘Greenhouse’ effect
‘Greenhouse’ effect plays an important role on encouraging the generation of global warming. Therefore, this essay will provide the definition of ‘Greenhouse’ effect. Different kinds of atmospheric gases comprise the ‘Greenhouse’ effect, these ‘Greenhouse’ gases are water vapour, carbon dioxide, ozone and other gases. Some of the energy released from the Earth’s surface is absorbed by these ‘Greenhouse’ gases, which prevents the energy from being lost to space. Hence, the lower atmosphere traps some of the energy and keeps the Earth’s surface warm (Karl, T. R. and Trenberth, K. E., 2003). ‘Greenhouse’ effect is essential to life on Earth since it maintains the long term annual average temperature of the Earth’s surface at approximately 32ºC. However, if the average temperature of the Earth’s surface raises, the situation will be adverse. ‘Greenhouse’ effect Promotes Global Warming
‘Greenhouse’ gases exist naturally in the Earth’s atmosphere. Nevertheless they are increasing due to human activities, such as the burning of fossil fuels for electricity generation and industrial production, which emit carbon dioxide to the atmosphere. In the recent report issued by the Intergovernmental Panel on Climate Change (IPCC), more than 2,000 scientists agreed that global warming is explicit and is highly certain that humans are the cause (Marianne,
Bibliography: BBC (2004) Global warming ‘biggest threat’. [Internet], Available from: <http://news.bbc.co.uk/2/hi/science/nature/3381425.stm> [Accessed 2/12/07]. Christy, J.R. and Goodrige, J.D. (1995) Precision global temperatures from satellites and urban warming effects from non-satellite data. Atmospheric Environment. 29 (16), pp.1957-1961. Intergovernmental Panel on Climate Change (IPCC) (1990) Scientific Assessment of Climate Change: Report to IPCC from Working Group II. World Meteorological Organisation & UN Environment Programme: Geneva & Nairobi. Cambridge: Cambridge University Press. Karl, T. R. and Trenberth, K. E. (2003) Modern Global Climate Change, Science. 302 (5651), pp. 1719- 1723. Marianne, L. (2007) Climate Clash, Round 2, U.S. News & World Report. 143 (20), pp.21-22. McMichael, A.J. (1993) Global Environmental Change and Human Population Health: A Conceptual and Scientific Challenge for Epidemiology, International Journal of Epidemiology. 22 (1), pp.1-8. National Climatic Data Center (2006) What is Global Warming?. [Internet], Available from: <http://www.ncdc.noaa.gov/paleo/globalwarming/what.html> [Accessed 3/12/2007].