Answer:
There is thermal "lag" in the heating of the atmosphere.
Explanation:
Some bodies like our Earth has some late expression of the temperature, is not an immediate effect when it is heating. It will depend on the thickness, on the thermic diffusion and the frequency of the heat.
An example of this thermal "lag" is the effect on summer time, with a soil that is still hot even at night, some hours after the sunset. But the time that takes the Earth to loose it it takes some time after the exposition.
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