The stratosphere is a layer of the atmosphere that consists of nearly 19 percent of the atmosphere's gases, which are nitrogen, oxygen, argon and trace elements like neon and helium. The atmosphere consists of five layers, and its gas composition is 78 percent nitrogen, 21 percent oxygen and 0.9 percent argon.
These layers, which are at different heights from the Earth's surface, are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. Located at a height of 31 miles from the surface of the Earth, the stratosphere layer contains very dry air. The highest temperature at this layer is 5 degrees Fahrenheit. The ozone layer is found in the stratosphere, and its function is the absorption of ultraviolet radiation.