The temperature of a commercial jet's exterior increases as it enters the stratosphere due to the presence of the ozone layer.
The exterior temperature of a commercial jet changes as it leaves Earth's surface and enters the stratosphere. In the lower stratosphere, where commercial jets fly, the temperature increases with altitude, from approximately -60°C to 0°C. This change is due to the presence of the ozone layer in the stratosphere, which absorbs UV radiation and causes this unique temperature profile.
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