The purpose of these portrayals is to show us that global warming is a looming threat to people all over the world.

这些漫画的目的是告诉我们：全球气候变暖对全世界的人们来说是迫在眉睫的威胁。

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Usually scientists rely on the temperature over land, taken from weather stations around the world for the last 150 years, to show global warming, reports the Telegraph.

每日电讯报道，科学家过去150年来通常依赖于世界各地气象站测得的土地温度来证明全球变暖。

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They all show warming, and, within academia, their reliability is widely accepted.

三组数值都显示出变暖的迹象，而且在学术界，它们的可靠性是被广泛接受的。

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Critics say the messages show climate change scientists discussing ways to discredit other theories about global warming.

VOA: special.2009.12.12

The UN models agree with established science that if human greenhouse gas emissions were causing global warming, there should be a hot spot of higher temperatures in the troposphere above the tropics, where collected concentrations would have the greatest effect, and the warming would show up first.

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Does this cast doubt on the data which show warming at the earth's surface?

ECONOMIST: A heated controversy | The

All three show warming of about the same magnitude.

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