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General Knowledge · Q724

Environmental Science

Competitive Exams · General Knowledge · question 724

Q724

The earth's radiative equilibrium temperature is:

A.
The temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates
Answer
B.
The temperature at which the earth is radiating energy at maximum intensity
C.
The average temperature the earth must maintain to prevent the oceans from freezing solid
D.
The temperature at which rates of evaporation and condensation on the earth are in balance

Answer: Option A

Solution

Answer: Option A
Solution:
This is radiative equilibrium, energy balance. The temperature at which this occurs is about 0 F. That is called the temperature of radiative equilibrium. You might remember this is the figure for global annual average surface temperature on the earth without the greenhouse effect.