the+controversy

The Controversy

There is scientific evidence that proves that global warming is evident in our world today. The Intergovernmental Panel on Climate Change (IPCC) consists of 2600 pages, has 122 main authors, 515 contributing authors and an additional 450 scientists to examine the evidence before it was published. The IPCC states that over the period of the twentieth century there has been 0.6oC increasing in temperatures and a 20cm increase in sea level around the world. This evidence has been found through extensive research on the ice of the Arctic Ocean.


 * [[image:Cycle_of_increase_in_temp_and_carbon_dioxide.gif width="800" height="490"]] ||

This graph shows how the increase of carbon dioxide has an effect on the increase in temperature, this statement is supported by the evidence produced from the ice core drillings from Antarctica and Greenland. At each peak in carbon dioxide there is a coinciding peak in temperature. The level of carbon dioxide and level of temperature follow the same lines and patterns except for when carbon dioxide reaches 290ppm ±5ppm when this level of carbon dioxide is reached it relates to 0oC. There is a spike in temperature of 0-4oC. This increased level of CO2 and temperature is always, based on this graph, followed by a sharp decrease in levels of both temperature and carbon dioxide. This graph shows the cycle of increasing and decreasing carbon dioxide and temperature to be linked but also to be cyclical. Therefore one theory is that it is agreed that temperatures are increasing but that this is natural for the earth to do as it has done before with ice ages.

It is argued however, that although there is evidence of climate change being cyclical the advancements of human technologies and the increase in carbon dioxide emissions has sped up the climate change reaction or will cause there to be more server conditions than in the past. Another theory is that the aerosols released within the pollution created by humans will cause cooling of the earth, this is based on the hypothesis that when the aerosols are released into the atmosphere they will reflect the suns radiation stopping the light energy from entering the earth’s atmosphere causing there to be a decrease in the earth temperature.


 * [[image:cooling_effect.jpg]] ||