Air currents generally move towards the poles at higher altitudes and away from the poles at lower altitudes. This creates a large-scale circulation pattern called the Hadley Cell.

Here's a breakdown:

* At the equator: Warm, moist air rises, creating low pressure.

* As the air rises: It cools and releases moisture as precipitation.

* At higher altitudes: The cooled, dry air flows towards the poles.

* Near the poles: This air descends, becoming warmer and dryer.

* At lower altitudes: The air flows back towards the equator.

This circulation pattern is responsible for many weather patterns, including the trade winds and the jet stream.