How is the atmosphere near the earth's surface heated from below?

Answer 1

its heated from pollution and stuff like that. all the hot dirty air.

Answer 2

The atmosphere is heated by the solar radiation from below.This is explained below.
During the daytime, both the earth and the atmosphere receive the solar radiation.However, it is known that air is more or less transparent to the solar radiation.This means the atmosphere absorbs very little;but the earth's surface which is composed of land and sea absorbs the solar radiation thereby increasing its temperature.
Most of the solar radiation received by the earth's surface raises its temperature and this heated surface ,in turn, heats the atmospheric air directly above it by conduction.The heated air then rises upwards as convection current and is transferred to higher levels therby causing mixing of air at different layer of different temperature.As a result, the atmosphere is heated from the bottom.
Besides, the heated surface of the earth also emits radiation as a long-wave radiation(the solar radiation being of short-wave radiation which the atmosphere cannot absorb directly) which travels upwards through the atmosphere.While dry air does not absorb this radiation much,the moist air absorbs this radiation increasing thereby its own temperature.Further to this,moist air also re-radiates long-wave radiations in all directions,keeping the heat waves trapped inside the atmosphere and thus not allowing the space between the earth and above to cool appreciably.

Answer 3

The lower levels of the atmosphere are heated by radiation and convection from the warm ground (heated by the sun)

Answer 4

it's called the greenhouse effect