Consider the following statements:
Statement-I: Solar radiation modification (SRM) has been proposed to temporarily reduce anthropogenic warming.
Statement-II: SRM methods primarily involve the use of aerosols to increase the reflectivity of the atmosphere and clouds.

Which one of the following is correct in respect of the above statements?
(a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
(b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I
(c) Statement-I is correct Statement-II is not correct
(d) Statement-I is not correct but Statement-II is correct

Question

Consider the following statements:
Statement-I: Solar radiation modification (SRM) has been proposed to temporarily reduce anthropogenic warming.
Statement-II: SRM methods primarily involve the use of aerosols to increase the reflectivity of the atmosphere and clouds.

Which one of the following is correct in respect of the above statements?
(a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I
(b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I
(c) Statement-I is correct Statement-II is not correct
(d) Statement-I is not correct but Statement-II is correct

ONLiNE UPSC · Accepted Answer

Statement-I is correct: Solar Radiation Modification (SRM) refers to large-scale, deliberate interventions aimed at reducing global warming by reflecting a portion of solar radiation back into space. These methods have been proposed as a temporary measure to mitigate the effects of anthropogenic climate change, especially given the slow pace of greenhouse gas (GHG) emission reductions.

Statement-II is correct: One of the primary SRM techniques involves injecting aerosols (such as sulfur dioxide) into the stratosphere to increase atmospheric reflectivity. Other methods include marine cloud brightening and surface albedo enhancement. These techniques aim to cool the planet by reducing the amount of solar radiation reaching the Earth's surface.
Since SRM is specifically designed to counteract anthropogenic warming by increasing atmospheric and cloud reflectivity through aerosols and other materials, Statement-II provides a directfor Statement-I.

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Solar Radiation Modification (SRM)

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M Question 1	⏱ 0
Consider the following statements: Statement-I: Solar radiation modification (SRM) has been proposed to temporarily reduce anthropogenic warming. Statement-II: SRM methods primarily involve the use of aerosols to increase the reflectivity of the atmosphere and clouds. Which one of the following is correct in respect of the above statements? (a) Both Statement-I and Statement-II are correct and Statement-II is the correct explanation for Statement-I (b) Both Statement-I and Statement-II are correct and Statement-II is not the correct explanation for Statement-I (c) Statement-I is correct Statement-II is not correct (d) Statement-I is not correct but Statement-II is correct