What is Atmosphere?

The atmosphere is the gaseous envelope that surrounds Earth, composed primarily of nitrogen (78%) and oxygen (21%), along with traces of other gases like argon, carbon dioxide, and water vapor. It plays a vital role in sustaining life and regulating weather patterns.

Divided into five layers—troposphere, stratosphere, mesosphere, thermosphere, and exosphere—the atmosphere influences weather and storm activity. Most weather events, including tornadoes and severe storms, occur in the troposphere, the lowest layer where temperature and pressure decrease with altitude.

The atmosphere is responsible for the formation of storm systems, including thunderstorms, hurricanes, and tornadoes. Wind patterns, pressure changes, and moisture levels within the atmosphere determine the severity and movement of these weather events.

Atmospheric pressure and temperature shifts also impact tornado development. When warm, moist air collides with cool, dry air, it can create instability, leading to severe weather. Understanding the atmosphere’s behavior helps meteorologists predict and track storms, allowing for timely warnings and preparations.