Answer:
The mesosphere's uppermost layer is the coldest in the atmosphere. There are temperatures as low as -90° C (-130° F) there! The air becomes cooler as you ascend into the mesosphere. The air in the mesosphere is substantially thinner (less dense) than in the stratosphere below.
The mesosphere is a layer of the atmosphere that surrounds the Earth. The mesosphere is located between the stratosphere and the thermosphere. It stretches from 50 to 85 kilometers (31 to 53 miles) above our globe... The stratopause, or barrier between the mesosphere and the stratosphere, is located at the bottom of the mesosphere.
The stratosphere is the layer above the stratosphere. From the top of the troposphere to roughly 50 kilometers (31 miles) above the ground, the stratosphere exists. The stratosphere is home to the famed ozone layer. This layer's ozone molecules absorb high-energy ultraviolet (UV) radiation from the Sun and convert it to heat. Unlike the troposphere, the stratosphere grows warmer as you climb higher! Because of the rising temperature trend with height, air in the stratosphere lacks the turbulence and updrafts that characterize the troposphere below. Commercial passenger aircraft travel in the lower stratosphere because it is less turbulent and hence provides a more comfortable flight. The jet stream moves at the troposphere's and stratosphere's boundary.
The mesosphere is located above the stratosphere. It reaches a height of around 85 kilometers (53 miles) above our globe. The mesosphere is where the majority of meteors burn up. In contrast to the stratosphere, temperatures drop as you ascend into the mesosphere. Near the top of this layer, the lowest temperatures in the Earth's atmosphere, around -90° C (-130° F), may be found. The mesosphere's air is considerably too thin to breathe (the air pressure at the bottom of the layer is well below 1 percent of the pressure at sea level and continues dropping as you go higher).
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