Which phrase describes the phenomenon that implies that small atmospheric changes affect the weather weeks or months later?

the butterfly effect
short-range forecast
long-range forecast
automated weather

Option A: The butterfly effect

Explanation:

The butterfly effect shows that a small change results in large effect. The change initially is small but the resulting effect is of large variation.  

The phenomenon that implies that small atmospheric changes affect the weather weeks or months later. This is a result of butterfly effect that a small change in atmosphere affects whether.