1. Definition
The atmosphere at a distance of about 10 to 50 kilometers from the surface. Located above the troposphere and below the dissipation layer. The stratosphere, also known as the stratosphere, is a layer of the earth’s atmosphere that is hot at the top and cold at the bottom. This layer is divided into different temperature layers, with the high temperature layer at the top and the low temperature layer at the bottom.
2. Features
It is just the opposite of the troposphere located below it, which is close to the surface. The troposphere is cold at the top and hot at the bottom. In mid-latitudes, the stratosphere is located at a height of 10-50 kilometers from the surface, while in the polar regions, this layer starts about 8 kilometers from the surface. Above the troposphere, up to the layer 50 kilometers above sea level, the airflow mainly shows horizontal movement and the convection phenomenon is weakened. This atmosphere is called the "stratosphere" or "stratosphere". There is basically no water vapor, clear and cloudless, and weather changes rarely occur here, so it is suitable for airplane navigation. At a height of 20-30 kilometers, oxygen molecules form an ozone layer under the action of ultraviolet rays, acting as a barrier to protect the creatures on the earth from the sun's ultraviolet rays and high-energy particles.