Gases:
* Ozone Layer: This is the most important feature of the stratosphere. It's a layer of ozone gas (O3) that absorbs most of the Sun's harmful ultraviolet (UV) radiation, protecting life on Earth.
* Nitrogen (N2): The most abundant gas, making up about 78% of the stratosphere.
* Oxygen (O2): The second most abundant gas, making up about 21% of the stratosphere.
* Carbon dioxide (CO2): A greenhouse gas that is increasing in the stratosphere due to human activities.
Other Features:
* Temperature Inversion: Unlike the troposphere where temperature decreases with altitude, the stratosphere has a temperature inversion, meaning temperature increases with altitude. This is due to the absorption of UV radiation by the ozone layer.
* Stratospheric Clouds: These are high-altitude clouds that form in the stratosphere. They are often made of ice crystals and can be very beautiful, but they are also associated with certain weather patterns.
* Jet Streams: Strong winds that flow horizontally through the stratosphere. They play an important role in global weather patterns.
* Meteors: Many meteors burn up in the stratosphere due to friction with the air.
Things you won't find in the stratosphere:
* Weather: Unlike the troposphere, there are no storms or other weather phenomena in the stratosphere. The air is very dry and stable.
* Life: The stratosphere is too harsh for most living organisms to survive. There is very little water vapor and the UV radiation levels are very high.
* Clouds: While there are stratospheric clouds, they are much rarer and less common than clouds in the troposphere.
The stratosphere is a fascinating and important layer of Earth's atmosphere. Its key role in absorbing harmful UV radiation makes it essential for life on Earth.
