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Reducing your carbon emissions - Freight Transport Association
Reducing your carbon emissions - Freight Transport Association

... 2020. With a pledge in 2010 that the Government will be the greenest ever, it is clear that if a substantial reduction is to be achieved, all sectors of the economy will need to make meaningful cuts. Transport is the fastest growing source of domestic carbon emissions and currently accounts for a qu ...
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... activities .“ (IPCC), 2001 The IPCC finds that it is “very likely” that emissions of heattrapping gases from human activities have caused “most of the observed increase in globally averaged temperatures since the mid-20th century. (IPCC) 2007 ...
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... as cells of air (or water) and the equations are applied to see how much air/heat flows between each pair of cells – This is repeated all around the Earth – The models have improved by making the cells smaller – They are now about 110 km square by 1 km high ...


... that directly reduce emissions from an existing practice (e.g., capturing emissions from an existing landfill), and question whether REC projects are actually displacing generation from existing fossil fuel plants as opposed to meeting an increased demand for power. For others, the question is linke ...
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Climate change feedback



Climate change feedback is important in the understanding of global warming because feedback processes may amplify or diminish the effect of each climate forcing, and so play an important part in determining the climate sensitivity and future climate state. Feedback in general is the process in which changing one quantity changes a second quantity, and the change in the second quantity in turn changes the first. Positive feedback amplifies the change in the first quantity while negative feedback reduces it.The term ""forcing"" means a change which may ""push"" the climate system in the direction of warming or cooling. An example of a climate forcing is increased atmospheric concentrations of greenhouse gases. By definition, forcings are external to the climate system while feedbacks are internal; in essence, feedbacks represent the internal processes of the system. Some feedbacks may act in relative isolation to the rest of the climate system; others may be tightly coupled; hence it may be difficult to tell just how much a particular process contributes. Forcings, feedbacks and the dynamics of the climate system determine how much and how fast the climate changes. The main positive feedback in global warming is the tendency of warming to increase the amount of water vapor in the atmosphere, which in turn leads to further warming. The main negative feedback comes from the Stefan–Boltzmann law, the amount of heat radiated from the Earth into space changes with the fourth power of the temperature of Earth's surface and atmosphere.Some observed and potential effects of global warming are positive feedbacks, which contribute directly to further global warming. The Intergovernmental Panel on Climate Change's (IPCC) Fourth Assessment Report states that ""Anthropogenic warming could lead to some effects that are abrupt or irreversible, depending upon the rate and magnitude of the climate change.""
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