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The mesopause is the point of minimum temperature at the boundary between the mesosphere and the thermosphere atmospheric regions. 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). [1]
The top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere. [8] Temperatures in the upper mesosphere fall as low as about −100 °C (173 K; −148 °F), [9] varying according to latitude and season.
Structure of Earth. The mesosphere is labeled as Stiffer mantle in this diagram. The lower mantle, historically also known as the mesosphere, represents approximately 56% of Earth's total volume, and is the region from 660 to 2900 km below Earth's surface; between the transition zone and the outer core. [1]
These layers are the troposphere, stratosphere, mesosphere, and thermosphere. The troposphere is the lowest of the four layers and extends from the surface of the Earth to about 11 km (6.8 mi) into the atmosphere, where the tropopause (the boundary between the troposphere stratosphere) is located. The width of the troposphere can vary depending ...
Noctilucent clouds (NLCs), or night shining clouds, [1] are tenuous cloud-like phenomena in the upper atmosphere of Earth.When viewed from space, they are called polar mesospheric clouds (PMCs), detectable as a diffuse scattering layer of water ice crystals near the summer polar mesopause.
But now scientists have found that other kinds of activity are happening far beneath our feet. (Getty Images) The inner core is found 3,000 mile beneath the surface of the Earth. Gravity keeps it ...
Find a globe in your local library or classroom and try this: Close the eyes, spin it and drop a finger randomly on its curved, glossy surface. In the age of Google Earth, watches that triangulate ...
In contrast, Death Valley, California, famous for its reputation as one of the hottest places on Earth, hit a high temperature of 99 on Wednesday. "We are getting a return gift from nature in the ...