GEOLOGY

Detailed explanation-1: -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).

Detailed explanation-2: -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 is called the mesopause.

Detailed explanation-3: -In the mesosphere, the thin air and small amounts of ozone prevent the air from warming much. Carbon dioxide in the mesosphere also helps make this layer cold. CO2 molecules absorb heat energy when they bounce off of other molecules.

Detailed explanation-4: -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).

Detailed explanation-5: -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.