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radiation fog

fog produced by the nocturnal cooling of the surface boundary layer to a temperature at which its content of water vapor condenses.
Also called ground fog.
Origin of radiation fog
1855-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for radiation fog
  • radiation fog forms on generally clear, cool nights.
  • radiation fog occurs when cool temperatures contrast with warm and moist ground.
  • Shallow ground fog is usually encountered when radiation fog begins to form as the surface cools following sunset.

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