stratosphere
Mesosphere
The mesohere,the boundary between the Thermosphere and Mesosphere, is technically the coldest place on Earth, with a temperature of −100 degrees Celsius (−148.0 degrees fahrenheit; 173.1 K).
I think its the Thermosphere but Im not 100% percent sure..just 99.9% LOL! Actually it is the stratosphere not the theremosphere! So that .1 percent that was unsure was correct! LOL!
The temperature in the mesosphere can vary widely, from about -90°C to -120°C (-130°F to -184°F) depending on the altitude and time of day. Above the mesopause, temperatures can drop even lower, reaching -100°C (-148°F) or lower.
Friction.Let's talk about "coldest layer" for a minute.The temperature profile of the atmosphere drops pretty sharply from the surface up to about 10km, stays more or less constant up to 20km, then starts gradually increasing again to a peak (still lower than surface temperature) around 50km, drops gradually to a minimum around 90km, then increases very sharply again above that, reaching surface temperatures again around 110km and continuing to increase beyond that.So the coldest layer is that from around 80-100 km.To meteors, the actual temperature of the atmosphere doesn't matter all that much. Even at the surface (which is considerably warmer than the region they mostly burn up in), the temperature is not high enough to burn up a meteor. Melt, maybe, if it were made of ice, but not much more than that.What happens instead is that the fast-moving meteor compresses (and therefore heats ... Ideal Gas Law) the air in front of it by a lot. Also, the friction of the air rushing past the meteor heats both the air itself and the meteor. That's what makes them "burn up", not the temperature of the atmosphere itself.(This does lead to the question of why they don't burn up even higher where the temperature is higher, and the reason for that is that temperature is a measure of the average kinetic energy of molecules. Molecules above 110 km have a lot of kinetic energy per molecule, but there aren't that many of them, so the overall energy is still low, and the meteor has little problem radiating away the small amount of energy it picks up from them.)
From Wikipedia:Temperature decreases with height in the mesosphere. The mesopause, the temperature minimum that marks the top of the mesosphere, is the coldest place on Earth and has an average temperature around −100 °C (−148.0 °F; 173.1 K)the mesosphere is the coldest layer in the atmosphere. It contains the ozone.OK!! the answer above is incorrect the coldest layer in the atmosphere is the Mesopause its the thin layer between the Mesosphere and Thermosphere. Also the Ozone is in the Stratosphere.Actually its correct because the mesopause is a part of the mesosphere....ok the 1st and 3rd answers are wrong! i should know im learning this in my 7TH GRADE SCIENCE CLASS! the ozone is in the stratosphere, the second closest layer to the earth. STUPIDS!
Mesosphere
The layer of the atmosphere with the coldest temperatures, reaching around -100 degrees Celsius, is the mesosphere. This layer extends from approximately 50 to 85 kilometers (31 to 53 miles) above the Earth's surface. Temperatures decrease with altitude in the mesosphere, making it the coldest atmospheric layer. It is situated above the stratosphere and below the thermosphere.
The Mesosphere has the lowest temperature of the layers of Earth's atmosphere because Temperature decreases with height in the mesosphere. The mesopause, the temperature minimum that marks the top of the mesosphere, is the coldest place on Earth and has an average temperature around −100 °C (−148.0 °F; 173.1 K)
Inosphere
The thermosphere is the layer of the atmosphere that has the greatest range in temperature, with temperatures increasing with altitude due to the absorption of solar radiation. Temperature in the thermosphere can vary from below -100°C at the bottom to over 2,500°C at higher altitudes.
The mesohere,the boundary between the Thermosphere and Mesosphere, is technically the coldest place on Earth, with a temperature of −100 degrees Celsius (−148.0 degrees fahrenheit; 173.1 K).
Its a layer of our atmosphere, above the stratosphere, but beneath the thermosphere. It starts at around an altitude of 50-60km and ends at around an altitude of around 100-120km. The temperature tends to drop with increased height through the mesosphere. At the 100-120km point is the coldest place on earth, with temperatures around -160'C. Temperatures then start to rise again with height through the thermosphere.
100 degrees below 0 (shivers)
The coldest temperature ever recorded on Mount Everest was around -40 degrees Celsius (-40 degrees Fahrenheit).
The mesohere,the boundary between the Thermosphere and Mesosphere, is technically the coldest place on Earth, with a temperature of −100 degrees Celsius (−148.0 degrees fahrenheit; 173.1 K).
The coldest forecast summit temperature on Mount Everest was -41 degrees Celsius. On average, the summit is about -35 degrees Celsius.