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

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.

Word History and Origins

Origin of upper atmosphere¹

First recorded in 1890–95

Example Sentences

But as climate change shifts atmospheric conditions, experts warn that air travel could become bumpier: temperature changes and shifting wind patterns in the upper atmosphere are expected to increase the frequency and intensity of severe turbulence.

From BBC

Weather balloons are an important tool used by meteorologists to collect weather data - from temperatures, to humidity, pressure, or wind speed - from the upper atmosphere.

From BBC

The Mars Atmosphere and Volatile Evolution mission, which reached Mars orbit in 2014, has provided critical data about its upper atmosphere for 10 years.

From Los Angeles Times

Large plumes of smoke that rise from intense fires, that can burn for weeks on end, sometimes reach the upper atmosphere to be picked up by the jet stream - a zone of strong winds, close to the level at which planes fly.

From BBC

On Thursday, the department announced that it will likely suspend the launch of weather balloons at several locations across the country, decreasing the amount of forecasting data captured by the balloons through sensors in the upper atmosphere.

From Los Angeles Times