˜yÐÄvlog

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upper atmosphere

noun

Meteorology.
  1. the portion of the atmosphere above the troposphere.


upper atmosphere

noun

  1. meteorol that part of the atmosphere above the troposphere
“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

upper atmosphere

  1. The part of the atmosphere above the troposphere. The upper atmosphere includes the mesosphere, the ionosphere, the thermosphere, and the exosphere. Temperatures in the upper atmosphere decrease with increasing altitude except in the thermosphere, where temperatures increase significantly with altitude, because the few molecules present receive intense solar radiation.
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˜yÐÄvlog History and Origins

Origin of upper atmosphere1

First recorded in 1890–95
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Example Sentences

Examples have not been reviewed.

The second stage is the upper portion of the rocket and is responsible for delivering items into orbit after the first stage has successfully propelled the rocket into Earth’s upper atmosphere and detached itself.

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This pattern in the upper atmosphere has allowed a large, slow-moving area of high pressure to build over Scandinavia and has led to a cool airmass heading our way.

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Small asteroids typically burn up in the upper atmosphere before ever reaching Earth’s surface to become meteorites.

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But it was Littler on the chat show sofas alongside Hollywood stars, Littler on the front of kids' darts sets under the Christmas tree, Littler streaking through the earth's upper atmosphere as part of a gaming console advert.

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"The haze in the dark ovals is 50 times thicker than the typical concentration," said Zhang, "which suggests it likely forms due to swirling vortex dynamics rather than chemical reactions triggered by high-energy particles from the upper atmosphere. Our observations showed that the timing and location of these energetic particles do not correlate with the appearance of the dark ovals."

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