greenhouse effect

greenhouse effect
greenhouse effect
This important but often misunderstood term is defined by the Concise Oxford Dictionary (2006) as ‘the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface’. Despite the broadening of this definition since earlier editions, the almost exclusive focus of attention of this term is the Earth. A greenhouse gas is a gas, primarily carbon dioxide, that contributes to the greenhouse effect. See also global warming, under global.

Modern English usage. 2014.

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