Consider the following statements regarding the Keeling Curve:
1. It represents the concentration of methane in Earth's atmosphere over time.
2. The measurements began in 1958 at the Mauna Loa Observatory in Hawaii.
3. It shows both a long-term upward trend and seasonal fluctuations.

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

Question

Consider the following statements regarding the Keeling Curve:
1. It represents the concentration of methane in Earth's atmosphere over time.
2. The measurements began in 1958 at the Mauna Loa Observatory in Hawaii.
3. It shows both a long-term upward trend and seasonal fluctuations.

Which of the statements given above is/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 not correct but Statement 2 is correct: The Keeling Curve is a graph showing the continuous increase in atmospheric carbon dioxide (CO2) concentration since 1958, measured at the Mauna Loa Observatory in Hawaii, and is a visual representation of the ongoing change in the concentration of carbon dioxide in Earth's atmosphere.

Statement 3 is correct: The curve exhibits a long-term upward trend in CO2 concentrations and seasonal fluctuations due to natural processes

Atmospheric Science

Keeling Curve

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M Question 1	⏱ 0
Consider the following statements regarding the Keeling Curve: 1. It represents the concentration of methane in Earth's atmosphere over time. 2. The measurements began in 1958 at the Mauna Loa Observatory in Hawaii. 3. It shows both a long-term upward trend and seasonal fluctuations. Which of the statements given above is/are correct? (a) 1 and 2 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2, and 3