Located between about 50 and 80 kilometers (31 and 50 miles) above Earth’s surface, the mesosphere gets progressively colder with altitude. In fact, the top of this layer is the coldest place found within the Earth system, with an average temperature of about minus 85 degrees Celsius (minus 120 degrees Fahrenheit).
Which is the coldest and hottest layer of atmosphere? – Byju’s
Layers of Earth’s Atmosphere | Center for Science Education
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What is the coldest and hottest layer of the atmosphere?
The coldest layer of atmosphere is the mesosphere while the hottest layer of the atmosphere is thermosphere.
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Why is mesosphere the coldest layer?
Due to the lack of solar heating and very strong radiative cooling from carbon dioxide, the mesosphere is the coldest region on Earth with temperatures as low as -100 °C (-148 °F or 173 K).
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What is the hottest layer of the atmosphere?
The thermosphere is often considered the “hot layer” because it contains the warmest temperatures in the atmosphere. Temperature increases with height until the estimated top of the thermosphere at 500 km. Temperatures can reach as high as 2000 K or 1727 ºC in this layer (Wallace and Hobbs 24).
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What is the coldest layer of the atmosphere?
Located between about 50 and 80 kilometers (31 and 50 miles) above Earth’s surface, the mesosphere gets progressively colder with altitude. In fact, the top of this layer is the coldest place found within the Earth system, with an average temperature of about minus 85 degrees Celsius (minus 120 degrees Fahrenheit).
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Why is mesosphere the coldest atmospheric layer?
The mesosphere is the coldest layer because it has essentially nothing to heat it. The atmosphere is primarily heated from below, and the troposphere is warmed by that mechanism. The stratosphere is colder, but ozone in the upper stratosphere absorbs enough radiation to warm it.
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Which is the coldest layer of the atmosphere and why?
Located between about 50 and 80 kilometers (31 and 50 miles) above Earth’s surface, the mesosphere gets progressively colder with altitude. In fact, the top of this layer is the coldest place found within the Earth system, with an average temperature of about minus 85 degrees Celsius (minus 120 degrees Fahrenheit).
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What is so special about the mesosphere?
It is the coldest place on Earth and has a temperature on the order of − 85°C (− 120°F). Just below the mesopause, the air is so cold that even the very scarce water vapor at this altitude can be sublimated into polar-mesospheric noctilucent clouds.
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Why is mesosphere the coldest layer Class 7?
This is because there are few gas molecules in the mesosphere to absorb the Sun’s radiation. The only heat source is the stratosphere below. The mesosphere is extremely cold, especially at the top, dropping to a temperature as low as -90°C.
