Gases:
* Nitrogen (N2): 78% of the atmosphere, primarily inert
* Oxygen (O2): 21% of the atmosphere, essential for life
* Argon (Ar): 0.93% of the atmosphere, inert
* Carbon Dioxide (CO2): 0.04% of the atmosphere, a greenhouse gas
* Other trace gases: Ozone (O3), neon (Ne), helium (He), methane (CH4), krypton (Kr), hydrogen (H2), xenon (Xe), etc.
Water Vapor:
* Varies significantly depending on location and time of year.
* Responsible for clouds, rain, snow, and other weather phenomena.
Particulates:
* Dust, smoke, pollen, sea salt, volcanic ash, etc.
* Can influence cloud formation and air quality.
Temperature:
* Decreases with altitude, roughly 6.5°C per kilometer.
* This is due to the decreasing pressure and the absorption of solar radiation by the Earth's surface.
Other Notable Features:
* Weather: Almost all weather occurs in the troposphere.
* Life: The troposphere is where most living organisms exist.
* Air pressure: Decreases with altitude.
* Turbulence: Air can be turbulent, especially near the surface.
It's important to note that the troposphere is constantly changing due to factors like solar radiation, atmospheric circulation, and human activities.
