Which is the coldest layer of the atmosphere?

The mesosphere is the coldest layer of the atmosphere

Four layers of the atmosphere

The atmosphere comprises layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere.

  • Troposphere: It is the lowest layer of our atmosphere. We, humans, live in the troposphere, and nearly all weather occurs in this lowest layer.
  • Stratosphere: The stratosphere extends from the top of the troposphere to about 50 km (31 miles) above the ground.
  • Mesosphere: Above the stratosphere is the mesosphere. The coldest temperatures in Earth’s atmosphere, about -90° C (-130° F), are found near this layer’s top. The air in the mesosphere is far too thin to breathe.
  • Thermosphere: High-energy X-rays and UV radiation from the Sun are absorbed in the thermosphere

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