2013年8月24日星期六

Has global warming hit a plateau?

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And what does it mean to the threat of catastrophic climate change?
Why warming trend to slow
Climate scientists don't know. They don't know is that the average air temperature has risen up in the earth's surface is only about 0.2 degrees Fahrenheit - in the 20th century, since 1998 the hottest year - even humans continued to pour into a large amount of carbon dioxide and other greenhouse gas atmosphere. World injected around 11 billion tonnes of carbon dioxide - about a quarter of the total in the humanity since the industrial revolution began to between 2000 and 2010 in the air. According to the model of man-made climate change, greenhouse gases heat capturing the planet in the solar radiation in the atmosphere, otherwise it may radiate into space. So should cause an extra emissions over the past decade the average temperatures continue to rise steeply, they in the 90 s and 1980 s. Climate change skeptics say, proves that the plateau climate warming climate scientists say greenhouse gas emissions is not sensitive, therefore, it would be foolish, expensive measures to restrict the use of fossil fuel emissions of carbon dioxide. "There is no problem with global warming," said that in Australia's Ian Plimer, professor of earth science at the university of Melbourne. "It stopped in 1998."
Climate scientists agree?
They admit that temperature rising rapidly, because they have in the past two decades, but said that the world is gradually warming, due to human emissions. Temperature, although the average plateau climate experts point out, is hotter than the 1990 s, 2000, nine records of the 10 warmest years have occurred since 1998. Overall, the world has warmed 1.4 degrees Fahrenheit, this sounds very gentle, but for the entire quantity of heat of the earth's surface is a huge, have caused a large number of melting of the polar ice caps and extreme weather around the world. However, this does not explain "the warmth of missing hot" - in the past decade's greenhouse gas emissions should be trapped in the atmosphere of what had happened.

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