Consider the following statements: 1. High clouds primarily reflect solar radiation and cool the surface of…

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?
  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

Solution

1 incorrect: High clouds (cirrus) primarily trap outgoing infrared radiation (warming effect) rather than reflect solar radiation. 2 incorrect: Low clouds (stratus) mainly reflect incoming solar radiation, causing a net cooling effect.

Asked in: UPSC Prelims 2022

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