system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Where does wind come from?

Like how is there just air blowing around so fast. I don't understand what causes it/how it gets to blow so fast.
gpt
Often, a big driving factor is the sun.

The sun heats the ground. But it doesn't heat it evenly. Cloud cover changes the amount of heating, some surfaces absorb more heat than others, the sea heats up more slowly than the land.

The hot ground warms the lowest level of air, the bit of air that's in contact with the ground. Hot air rises, so this bit of warm air rises. This creates a bit of low pressure, in the area where that air was, that needs to be filled. So air from a few miles away, where the pressure is higher (perhaps due to less heating) will flow into the gap.

This creates a cycle. Cold air falls into the space made by the high pressure air moving away, and way up high, the air that had risen from the low pressure area moves sideways to complete the cycle.