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radiational cooling

the cooling of the earth's surface and adjacent air, primarily at night, caused by a loss of heat due to surface emission of infrared radiation. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for radiational cooling
  • Saturation was temporarily delayed as the warming combated the radiational cooling under clear skies.
  • Clear skies and light winds allow for ideal radiational cooling at night.
  • However, the smoke plume moved over the area and slowed down the radiational cooling.
  • During the winter and early spring months, fog occasionally forms due to radiational cooling from snow cover on the ground.
  • During the nighttime hours, the air near the ground is cooled by the process of radiational cooling.
  • radiational cooling of the ground during the long nights cools the adjacent air and forms fog as temperatures reach dew points.
radiational cooling in Science
radiational cooling
The cooling of the Earth's surface and the air near the surface, occurring chiefly at night. It is caused by the emission of infrared radiation from the Earth's surface and from the tops of clouds and the atmosphere. Because infrared radiation is absorbed by water vapor, cloudless nights usually allow for greater radiational cooling than overcast nights. Radiational cooling occurs in all regions of the Earth and is important in maintaining the Earth's energy balance.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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