When moist air crosses a mountain range, it is forced to rise, and the water vapor it contains condenses to form raindrops and snowflakes that fall on one side of the mountain. The air, wrung of its moisture, continues onward, producing a "rain shadow" on the lee side of the mountain.
Originally uploaded in Integrate:Teaching for Sustainability:InTeGrate Modules:Modeling Earth Systems:Student Materials.
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Nov30 14