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en.wikipedia.org/wiki/Mesosphere

Temperature. Within the mesosphere, temperature decreases with increasing height, due to decreasing absorption of solar radiation by the rarefied atmosphere and increasing cooling by CO 2 radiative emission. The top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere.

scied.ucar.edu/shortcontent/mesosphere-overview

Temperature decreases with height throughout the mesosphere. The coldest temperatures in Earth's atmosphere, about -90° C (-130° F), are found near the top of this layer. The boundary between the mesosphere and the thermosphere above it is called the mesopause. At the bottom of the mesosphere is the stratopause, the boundary between the ...

www.windows2universe.org/earth/Atmosphere/mesosphere_temperature.html

Temperature in the Mesosphere The top of the mesosphere is the coldest part of the atmosphere. It can get down to -90° C (-130° F) there! As you go higher in the mesosphere, the air gets colder. The air is much thinner (less dense) in the mesosphere than in the stratosphere below.

softschools.com/facts/weather/mesosphere_facts/2199

The temperature of the mesosphere becomes colder as the distance from the earth increases. The temperature can drop to -140 degrees Celsius however at its warmest level, depending on season, the temperature can reach -5 degrees Celsius. The mesosphere is the coldest atmospheric layer surrounding the earth.

www.answers.com/Q/Temperature_of_the_mesosphere

The temperature of the upper mesosphere may fall as low as −101 °C (172 K; −150 °F). The temperatures in the lower mesosphere tend to be around the freezing point of water: 0 °C (273 K, 32 °F)

www.britannica.com/science/mesosphere

Mesosphere: Mesosphere, region of the upper atmosphere between about 50 and 80 km (30 and 50 miles) above the surface of the Earth. The base of the mesosphere is defined as the temperature maximum existing at the top of the stratosphere, with the boundary between the two regions usually called the

www.euston96.com/en/mesosphere

The mesosphere is the earth's atmosphere located above the stratosphere and below the thermosphere.This layer of the atmosphere decreases in temperature as the altitude increases. It can even reach temperatures of -80° C, at short distances.

www.encyclopedia.com/.../atmospheric-and-space-sciences-atmosphere/mesosphere

The temperature in the mesosphere is lower than the temperature of the troposphere or stratosphere, which makes the mesosphere the coldest among the atmospheric layers. It is colder then Antarctica's lowest recorded temperature, and it is cold enough to freeze water vapor into ice clouds, which can be seen mostly after sunset.

en.wikipedia.org/wiki/Mesosphere_(mantle)

In geology, the mesosphere refers to the part of the Earth's mantle below the lithosphere and the asthenosphere, but above the outer core. The upper boundary is defined by the sharp increase in seismic wave velocities and density at a depth of 660 kilometers (410 mi).

www.weather.gov/jetstream/layers

As such, temperatures increase as one descends rising to about 5°F (-15°C) near the bottom of this layer. The gases in the mesosphere are now thick enough to slow down meteors hurtling into the atmosphere, where they burn up, leaving fiery trails in the night sky.