With reference to the carbon sequestration, consider the following statements:
1. It has been proposed as a way to slow the atmospheric and marine accumulation.
2. It may be carried out by pumping carbon into carbon sinks.
3. Brown and blue carbon sequester greenhouse gases from the atmosphere.

Which of the statements given above are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Question

With reference to the carbon sequestration, consider the following statements:
1. It has been proposed as a way to slow the atmospheric and marine accumulation.
2. It may be carried out by pumping carbon into carbon sinks.
3. Brown and blue carbon sequester greenhouse gases from the atmosphere.

Which of the statements given above are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

ONLiNE UPSC · Accepted Answer

Statement 1 is correct: Carbon sequestration refers to the process of capturing and storing atmospheric carbon dioxide (CO2) to mitigate climate change. It has been proposed as a strategy to slow down the accumulation of CO2 in both the atmosphere and oceans, thereby reducing global warming and ocean acidification.

Statement 2 is correct: Carbon sequestration can be carried out by storing carbon in natural or artificial carbon sinks. These include forests, soil, peatlands, and geological formations where CO2 is pumped underground (e.g., in depleted oil and gas reservoirs or saline aquifers). This method is used in Carbon Capture and Storage (CCS) technology.

Statement 3 is not correct: Black and brown carbon contribute to atmospheric warming by absorbing sunlight and converting it to heat. In contrast, green and blue carbon refer to carbon sequestered by terrestrial and marine ecosystems, respectively, acting as carbon sinks that effectively remove carbon dioxide from the atmosphere and store it.

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M Question 1	⏱ 0
With reference to the carbon sequestration, consider the following statements: 1. It has been proposed as a way to slow the atmospheric and marine accumulation. 2. It may be carried out by pumping carbon into carbon sinks. 3. Brown and blue carbon sequester greenhouse gases from the atmosphere. Which of the statements given above are correct? (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3