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Above the Inversion, Red Butte, Salt Lake City, Utah, USA
Utah

The Red Butte gets its name from the nugget sandstone formation, deposited as sand dunes 150 to 200 million years ago. The Red Butte Canyon sandstone was once quarried for use in construction. The old Salt Lake City Hall, located across the street from the State Capitol building, is constructed of the rock brought down by rail car. Several old houses in the area on Capitol Hill are also constructed of the same material.

On this cold January morning, the valley below is locked in an atmospheric inversion, when cold air traps fog and pollution below that cannot rise through the warmer air above.   The surrounding mountains also help trap the pooled cold air and the ground cover of snow insures that temperatures near the ground will remain near or below freezing.  That morning, the 2.5 particulate index was near 40.  By way of comparison, on the same day in Beijing the PM2.5 was near 200.

Copyright: John Roberts
Type: Spherical
Resolution: 18240x9120
送信日: 21/01/2013
更新日: 10/06/2014
見られた回数:

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Tags: canyons; red rock; geology; hiking; outdoor recreation; public lands; overlooks; pollution; desert
  • Luis Erantzcani almost 2 years ago
    Good color in a very interesting place to make a pano. Great image!
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