There is one ozone layer in Earth's atmosphere.
Understanding the Ozone Layer
The ozone layer is not a separate atmospheric layer itself, but rather a region within the stratosphere, the second layer of Earth's atmosphere. The stratosphere is a mass of protective gases that surrounds our planet.
Key Points About the Ozone Layer
- Location: The ozone layer resides within the stratosphere.
- Function: It is primarily known for absorbing most of the sun’s harmful ultraviolet (UV) radiation.
- Thickness: Although we refer to it as a layer, the ozone concentration varies depending on altitude and it's not a solid, thick shell.
- Stratification: As the reference states, the stratosphere is stratified, meaning its temperature increases with elevation.
Why Only One Ozone Layer
The term "ozone layer" refers to the region in the stratosphere where ozone (O3) concentration is significantly higher than in other parts of the atmosphere. The reference confirms it's one layer.
| Feature | Description |
|---|---|
| Number | One |
| Location | Within the stratosphere |
| Primary Function | Absorbs UV radiation |
Therefore, despite the stratosphere having various levels or temperature stratification, the ozone layer refers to one distinct region with a higher concentration of ozone.
