Layers of Atmosphere of Earth

Layers of Atmosphere of Earth
Layers of Atmosphere of Earth

Layers of Atmosphere of Earth

Layers of Atmosphere of Earth: The atmosphere of Earth is made up of layers, and each layer has its own characteristics. There are five layers to the Earth’s atmosphere: lower atmosphere, Stratosphere, Mesosphere, Thermosphere and Exosphere they are isolated in view of temperature.

Earth’s atmosphere is the layer of gases, collectively referred to as air, that is retained by Earth’s gravity and forms the planet’s atmosphere.

As of 2023, dry air contains small amounts of carbon dioxide, 0.04 percent carbon dioxide, 20.95% oxygen, 0.93 percent argon, and 78.08 percent nitrogen.

All Layers Of Atmosphere

S.No. Layers Name Height (KM)
1. Troposphere 0-12 Km
2. Stratosphere 12-50 Km
3. Mesosphere 50-80 Km
4. Thermosphere 80-700 Km
5. Exosphere 700-10,000 Km


Different Layers Of Atmosphere

1. Troposphere

Troposphere The troposphere is Earth’s lowest atmosphere layer. It rises to a height of 8 kilometers at the poles and 18 kilometers at the equator. This layer of the atmosphere contains all weather. anything that occurs in the weather, such as storms, precipitation, etc. takes place in this layer. Here, the majority of the time, you’ll find a few dust particles, water vapours, and other unclean gaseous particles. Here is what we breathe during the process of respiration.

This layer of the atmosphere keeps the Earth warm by absorbing the highest heat emitted by its surface. The temperature drops in this layer with height at a rate of 6.5 degrees Celsius per 1000 meters, or a “normal lapse rate.” The tropopause, or upper limit of the troposphere, is about 1.5 Km thick. The layer that separates the troposphere from the stratosphere above it is called the tropopause.

2. Stratosphere

Overhead of the troposphere is the Stratosphere. It reaches a height of about 50 kilometers from the ground. Cirrus clouds are present and there is weaker or no wind circulation in the lower stratosphere. It makes it easier to fly in conditions that are good for flying. As a result, aircraft, aircraft, and jets traverse the lower stratosphere.

It also has an ozone layer that protects against the sun’s ultraviolet rays by absorbing them. Earth’s temperature is helped to drop in this way. The ozone layer extends 15-30 kilometers above sea level. Due to the presence of ozone molecules in this layer, the temperature rises with height. Due to the Earth’s surface emitting an excessive amount of greenhouse gases, this ozone layer has depleted in recent years.  The term “stratopause” refers to the stratosphere’s uppermost layer Due to its potential to raise Earth’s temperature and contribute to global warming, ozone depletion poses a significant threat to life on Earth.

3. Mesosphere

Above the stratosphere, the Mesosphere is the third layer of Earth’s atmosphere. It reaches 50-90 kilometers in height from the ground. The temperature in this layer drops with height, making it the coldest layer in the atmosphere. At a height of 80-90 km, the temperature can drop as low as -90°C. In this layer, the divine bodies like shooting stars wreck while going into this layer of the climate from space. The term “mesopause” refers to the mesosphere’s uppermost layer.

4. Thermosphere

Ionosphere and the thermosphere The thermosphere is located above the mesosphere. It reaches a height of 80-640 kilometers from the ground. The presence of the sun’s ultraviolet and X-ray radiation causes the temperature in this layer to rise with height. In the upper thermosphere, the temperature can reach about 2,000 degrees Celsius. The weather phenomena like the aurora, northern lights, and others. occur within this layer.

5. Exosphere

The topmost layer of Earth’s atmosphere, the exosphere, is located above the ionosphere. It stretches out starting from the earliest stage to 10,000 Km in level. This layer has a lower air density and a temperature of up to 5568°C. It is a layer that is very close to space. Air density decreases as lighter gaseous hydrogen and helium particles travel into space. The exosphere does not have a distinct upper layer; however, we believe that the fictitious line known as the exopause separates the exosphere from space.

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