mesosfääriin

Mesosfääriin is a Finnish term that translates to "mesosphere" in English. The mesosphere is the third layer of Earth's atmosphere, situated above the stratosphere and below the thermosphere. It extends from approximately 50 kilometers (31 miles) to 85 kilometers (53 miles) above the Earth's surface.

Within the mesosphere, temperatures decrease with increasing altitude, reaching the coldest temperatures in the Earth's atmosphere, often dipping below -90 degrees Celsius (-130 degrees Fahrenheit). This low temperature is a result of the decreasing absorption of solar radiation and the minimal presence of ozone.

The mesosphere is where most meteors burn up upon entering the Earth's atmosphere, creating the visible streaks of light known as shooting stars. The air pressure in the mesosphere is extremely low, making it impossible for humans to survive without specialized equipment.

This atmospheric layer plays a role in the formation of noctilucent clouds, which are the highest clouds in Earth's atmosphere and are visible during twilight in polar regions. The mesosphere is challenging to study directly due to its altitude, and our understanding of its dynamics and composition is still evolving.