It is important before starting to give a definition of the term troposphere to be able to discover its etymological origin . In this sense, we must mention that the word is derived from Greek , and is formed from the sum of two different nouns: The word ” tropes “, which can be translated as ” turn “; and the noun “ sphaira ”, which is synonymous with “ sphere ”. The troposphere is the layer of the atmosphere that is closest to the earth. It starts at ground level and rises until reaching a height of 7 to 20 kilometers above sea level. The largest amount of dough what the atmosphere has is located in this layer. The states and changes ofclimate and weather as well as meteorological phenomena that affect the earth take place in this important layer, the air that we find in the place is hot and the pressure and density of the air are much lower. It is here where we see airplanes fly, helicopters and all those means of transport that use the air to get from one place to another.


What is the troposphere?

The troposphere is the layer of the atmosphere that is located closest to sea ​​level , only between 7 and 20 kilometers. It is the place where all meteorological phenomena , climate and weather occur . It is important because it is in this place where there are higher levels of oxygen necessary to survive.

  • Characteristics of the troposphere
  • Composition of the troposphere
  • Properties of the troposphere
  • Function
  • Meteorological phenomena
  • Troposphere temperature
  • Pollutants
  • Importance

Characteristics of the troposphere

It is in this layer of the atmosphere that meteorological phenomena such as wind , rain and snow occur . Every time the sun heats the ground, the hot air rises. From this moment the water evaporates and rises with the hot air until it reaches cooler heights. Because the cold air cannot absorb all the water, it condenses into clouds. Upon reaching the tropopause, the water and air stop rising, thus forming rain, snow or hail.


It is in the troposphere where we find the highest concentration of oxygen and water vapor which makes life in the biosphere possible , a place in which all living beings have the ability to develop. It is a temperature regulator for the earth. Without the troposphere, the thermal differences between day and night would make life impossible. This characteristic is one of the most important for living beings. This is the place where the acquaintance occurs greenhouse effectthanks to the presence of gases such as carbon dioxide and water vapor, which are responsible for absorbing infrared radiation from the sun and 88% of it, but which is emitted by the earth. The solar rays pass through the troposphere and are “trapped”, causing the temperatures of the earth to be suitable for inhabiting it.

It is in this layer where the aircraft flights take place. These must pressurize their cabins due to the lack of oxygen and the cold at the height of the flight. The troposphere is the thinnest layer in the atmosphere, but at the same time it is where the greatest amount of turbulence is found.

Composition of the troposphere

The largest amount of gas that we can find in our atmosphere is nitrogen . About 4/5 of the air that exists in the troposphere is nitrogen and the largest amount of gas in it is oxygen , necessary for breathing. But there are also small amounts of other chemicals. In it are also the greenhouse gases that trap the heat of the Sun in our atmosphere. The Earth would be very cold if we did not have greenhouse gases. Carbon dioxide and methane are two very important greenhouse gases found in the troposphere. Other gases that we find are nitric acid , sulfuric acid and nitrogen oxide .

Properties of the troposphere

The main properties are the density , the amount of humidity , temperature and pressure . All these factors are of great relevance for the establishment of the climate and temperature on earth. The density and the pressure are also influenced by the height and the air becomes sparse with greater heights. It is capable of giving rise to the different states of the weather and through water vapor and dust particles the formation of clouds occurs .


This important layer of our atmosphere acts as a thermal regulator of the planet; Without this layer and without temperature regulation, the thermal differences between day and night would be so great that we would not be able to survive. It is of vital importance for living beings

Meteorological phenomena

The meteorological phenomena are rooted in the troposphere, this because from there that the clouds do not develop. These meteorological phenomena are formed by the changes that occur in the warming caused by the sun in the different regions of the planet . This situation causes the convection of currents and winds, which, accompanied by changes in pressure and temperature, give rise to climate phenomena.

Troposphere temperature

If not for the tropopause, our planet would lose all the water we have as it would evaporate and migrate to outer space. It could be said that the tropopause is an invisible barrier that keeps our temperature conditions stable and allows the water to remain within our reach.


All those combustion processes that generate some type of energy and force in all industrial activities and that in this way produce waste gases that generate gaseous by-products that are not useful and are released into the atmosphere pollute the troposphere. Manufacturing, burning garbage, fishmeal production , domestic kitchens, small-scale businesses, etc., are responsible for producing more pollutants every day. When these waste products are released into the air, it does not mean that they will disappear, but rather that they can become semi-permanent components, producing a serious pollution. air condition.


  • In it the meteorological changes that govern the planet take place.
  • It protects us from ultraviolet rays and radiation .
  • It is the means by which airplanes move from one place to another, facilitating communication.
  • It is a thermal regulator of our planet.

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