Question

why troposphere is called the layer of disturbance​

Answer 1

Explanation:

Some of the solar energy is absorbed, for example, by the ozone layer but not so much. Most of it is absorbed by the sea and, even more, dark land masses.

Therefore the air right above the surface of the earth, in what we call, the troposphere, is subject to intense heat that, in turn, warms us the air right above it and warmer air, being less dense, rises.

That is during daytime. At night, the opposite occurs; the colder air from above sinks. That can even cause a wind in mountainous regions; a wind called a katabatic wind.

But then, if cold air sinks, why is it colder with altitude? Well because the convection (rising) of air during daytime is much, much faster than the subsidence (sinking) at night.

All this can only occur in the troposphere because, above it, the stratosphere is where the ozone layer is and, as the rays of the sun changes oxygen (O2) into ozone (O3) it absorbs energy and that causes a thermal inversion; it gets warmer with altitude and nothing moves up or down.

Answer 2

Answer:

To summarize the other answer: because the air mixes a lot, in large part due to the ground and sea absorbing the sun light energy which in turn heats the air directly above it, which causes the air to rise, and then the air cooling off as it gets higher, causing the air to fall back down.