23 Sep '12, 12am

Have you ever heard of a '#rain shadow'? Learn about it here from the NASA Earth Observatory:

Within a three-hour drive across Oregon, you can visit a beach, a temperate rainforest, a mountain glacier, and the high desert. The diversity of the landscape is mostly driven by the interaction of air masses and the mountains. This image from the Landsat 5 satellite (bands 5, 4, and 3) was acquired on October 27, 2011. The false-color view shows the high desert—bare soil and sparse vegetation appear in shades of brown and pink—and the deep green vegetation on the west side of the Cascade Mountains. The one blue spot is the glacial cap of Mount Hood. The transition from green to brown is indicative of a rain shadow. Winds blow in from the west, carrying moisture from the Pacific Ocean. As the air moves across the landscape and up into the high elevations of the Cascade Range, air pressure decreases. The air cools and becomes unable to hold as much moisture, causing water ...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=79247

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Oregon Rain Shadow

earthobservatory.nasa.gov 22 Sep '12, 10pm

Within a three-hour drive across Oregon, you can visit a beach, a temperate rainforest, a mountain glacier, and the high d...

Oregon Rain Shadow [image] #NASA

earthobservatory.nasa.gov 23 Sep '12, 1pm

Within a three-hour drive across Oregon, you can visit a beach, a temperate rainforest, a mountain glacier, and the high d...

Oregon Rain Shadow: Within a three-hour drive a...

earthobservatory.nasa.gov 22 Sep '12, 10pm

Within a three-hour drive across Oregon, you can visit a beach, a temperate rainforest, a mountain glacier, and the high d...

A vivid image of Oregon's rain shadow, #Landsat...

earthobservatory.nasa.gov 26 Sep '12, 5pm

Within a three-hour drive across Oregon, you can visit a beach, a temperate rainforest, a mountain glacier, and the high d...

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