World climates

Geography and Environment (RAS) RAS Exam

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y Consider the following statements: 1. High clouds primarily reflect solar radiation and cool the surface of the Earth. 2. Low clouds have a high absorption of infrared radiation emanating from the Earth's surface and thus cause warming effect. Which of the statements given above is/are correct?

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1only

2 only

Both 1 and 2

Neither 1 nor 2

Explanation:

D Statement 1 is not correct: Low, thick clouds primarily reflect solar radiation and cool the surface of the Earth. Statement 2 is not correct: High, thin clouds primarily transmit incoming solar radiation; at the same time, they trap some of the outgoing infrared radiation emitted by the Earth and radiate it back downward, thereby warming the surface of the Earth.

By: Parvesh Mehta

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