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4.6 SEB323 Environment #6 25-Sep-09

4.6 SEB323 Environment #6 25-Sep-09 - For the last lecture...

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For the last lecture in this topic we’ll look briefly at the issue of climate change. Climate Change will not be on the exam – so there is no need to revise what we cover in these notes. 1
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Climate change. Let’s briefly look at what it is, what causes it, and what the current status of actions to reduce or prevent it are. 2
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The planet’s surface (land and water) and air temperatures are increasing. Although the temperature increases may seem minor (a few degrees over a number of years) it is important to consider that the Earth is a complex nonlinear dynamic system and so minor variations in parameters can cause significant (and nonlinear) effects on the system. As well as the mean temperature increases, there is also a trend toward increased variance – so extreme temperature and climate conditions are being experienced as well. 3
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