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Global Warming: Fact Or Fiction? Essay

1701 words - 7 pages

Global warming: fact or fiction?The average global temperature of Earth has increased by 0.8 degrees Celsius since 1880 at a rate of 0.15-0.20 degrees Celsius per decade, which may not seem a lot but can have destructive impacts on the oceans. As shown on the diagram below, the area with the largest temperature change is at the poles. Consequently, the rate of the melting of the polar ice caps has increased. According to statistics from NASA the thickness of the ice at the arctic pole has decreased by 40% since 1960 and the ice is melting at a rate of 9% per decade.NFigure 2 the warming of the earth 2000-2009Figure 1 the warming of the earth 1880-1889However, there are some people who believe that global warming is a "myth". There are statistics that show an increase in the size of the polar ice caps over the past year since summer 2012. As shown in figure 3 below the polar ice caps appear to have increased in size from August 2012 to August 2013.Figure 3 Increase of the polar ice caps August 2012-August 2013In this geographical issue I will be discussing the views of different sources and the scientific evidence that prove whether global warming is fact or fiction.Source 1 - Science has spoken: Global warming is a myth by Arthur B Robinson and Zachary W RobinsonFictionThis source believes that global warming is fiction. Although the volume of atmospheric CO2 is rising, 290 parts per million at the beginning of the 20th century which has increased to currently 360 parts per million, scientist have carefully monitored the atmospheric temperature over the past 50 years and have shown that greenhouse warming is not occurring and is unlikely to because the actual temperature is much lower than the predicted temperature as a result of global warming. It is also stated that the greenhouse gases are not well understood as the gases interact amongst themselves as well as other aspects of the atmosphere, not just the ozone layer. The temperature of the earth's atmosphere fluctuates as a result of many influences such as solar activity so it is unfair to say that the atmosphere is warming solely due to the increase of atmospheric CO2. Over the past 3000 years there have been periods where the temperature has been much higher and much lower than today with the Little Ice Age that occurred about 300 years ago and although the temperature has been rising since, it still remains far below the average temperature of the past 3000 years. Lastly the source states that we have nothing to worry about, as the earth has been through much warmer conditions over the past 3000 years without any bad consequences. An increase in atmospheric CO2 is beneficial as plants require it to photosynthesise with and has also permitted plants to grow in dry regions, therefore animal life which depend on plants increases.The authors of this source are chemists from the Oregon Institute of Science and Medicine which makes the source more reliable and because the source is a well...

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