Question

Why does all weather phenomena take place in the troposphere?

Answer 1

Hint: The atmosphere comprises various layers with shifting density and temperature. Density is most elevated close to the surface of the earth and diminishes with expanding height.

Complete answer: The Earth’s atmosphere is divided into a number of layers. Assigning from the surface to a height of 8 kilometres at the poles and 18 kilometre at the equator is the troposphere, named after the Greek word for mixing because in this way the atmosphere is circulated by winds. conditions in the troposphere vary from region to region and from time to time; the state of the atmosphere in any given place at any given time is called weather. Weather is caused by differences in the amount of energy and area received from the Sun, which leads to variations in atmospheric pressure, temperature, humidity, wind and cloud cover.

The greenhouse effect, responsible for insulating the earth with vital thermal radiation, occurs mostly in the troposphere where there is an abundance of greenhouse gases, particularly water vapour and carbon dioxide, including dust particles and other elements. So, most of the weather phenomenon happens in the troposphere. The troposphere becomes less dense with height, meaning that there are fewer particles to absorb the heat, with the result that temperatures in the troposphere decrease with height. Clouds, comprising tiny droplets of condensed water vapour form mostly in the troposphere.

Note: The zone separating the troposphere from the stratosphere is known as tropopause and weather disturbances usually do not go higher up this layer. The temperature in this region is nearly constant.