Without greenhouse effect, the average temperature of earth surface would be

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CollectorBabu · Accepted Answer

Correct Answer: –18°C. Without naturally occurring greenhouse gases, Earth's average temperature would be near -18°C. The concentration of greenhouse gases, especially carbon dioxide and methane, has fluctuated naturally over geological time scales. While the mechanisms responsible for these fluctuations are unclear, the temperature of Earth has responded to them by switching between ice age and interglacial conditions, i.e., periods of reduced and increased greenhouse warming. At present, roughly 30% of the incoming solar radiation is reflected back to space by the clouds, aerosols, and the surface of Earth.

Without greenhouse effect, the average temperature of earth surface would be

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