MCQ Detailed View

The stratosphere is the second layer of Earth’s atmosphere, positioned directly above the troposphere and below the mesosphere. It extends from the top of the troposphere, known as the tropopause, to the bottom of the mesosphere, called the stratopause, making it the layer between these two atmospheric zones. The stratosphere generally ranges from approximately 15 km to 50 km in altitude, although these boundaries vary slightly with latitude and season.

One of the most important features of the stratosphere is the ozone layer, which absorbs most of the Sun’s harmful ultraviolet (UV) radiation. This absorption protects living organisms on Earth from UV-induced damage and contributes to the temperature increase in the upper stratosphere. Unlike the troposphere below, which is turbulent and weather-active, the stratosphere is relatively stable, with minimal vertical air movement. This stability allows the ozone layer to remain concentrated and effective in its protective role.

Understanding the stratosphere’s position between the troposphere and mesosphere is essential for studies in atmospheric science, climate research, and environmental protection. High-altitude aircraft often operate in the lower stratosphere to avoid weather disturbances, while satellites in low Earth orbit must consider interactions with higher layers such as the mesosphere and thermosphere.

The stratosphere’s unique characteristics, including temperature inversion, ozone concentration, and layered airflow, make it a vital part of Earth’s atmospheric system. Recognizing that it extends from the top of the troposphere to the bottom of the mesosphere helps students and scientists understand the vertical structure of the atmosphere and the functions of each layer.