rain shadows

Mountain-blocked precipitation zones

A rain shadow is a dry area on the leeward side of a mountain range.

When moist air rises over mountains, it cools and drops precipitation on the windward slopes.

By the time the air descends the other side, it has lost most of its moisture, creating arid conditions: Death Valley lies in the rain shadow of the Sierra Nevada.

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windward · moisture barrier · elevation · microclimates · high desert · clouds · topography · desert · Great Basin · Patagonia · climatology · chaparral · heat · air masses · aridity · arid climate · rainshadow · condensation

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Opposites
precipitation effect

rain shadowsmonsoon regions

Zones with seasonal heavy rainfall

rainforests · humid climates · temperate rainforests · cloud forests · wetlands

mountain slope position

rain shadowsupslope

Toward higher elevation

resulting landscape/climate

rain shadowsrainforests

Wet, dense tropical woodlands

temperate rainforests · cloud forests · humid regions · lush valleys · wetlands

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