Section 1
The Rain Shadow Effect
Key Idea
The interaction between wind and mountains creates a specific weather pattern. On the side of the mountain facing the wind, the air rises, cools, and drops rain. This side is wet and green.
By the time the air crosses the peak and goes down the other side, it has lost its moisture. This dry area on the sheltered side of the mountain is called a rain shadow. This explains why one city can be rainy while a nearby city is dry.