Which of the following gases is used as reference to calculate "Global Warming Potential
(GWP)"?
-
A.
Nitrogen dioxide
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B.
Methane
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C.
Carbon dioxide
-
D.
Ozone
Correct Answer:
C. Carbon dioxide
Explanation:
Carbon dioxide is the reference gas used to calculate Global Warming Potential (GWP), and it is assigned a baseline value of 1. GWP is an index that compares the amount of heat trapped by a specific mass of a greenhouse gas in the atmosphere over a set period, typically 100 years, relative to the same mass of carbon dioxide. While other greenhouse gases like methane, nitrous oxide, and ozone have their own warming impacts, their potency is measured against the standard of carbon dioxide to provide a common unit for environmental analysis and policy.
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