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- (abbrev. GF) Fog produced over the land by the cooling of the lower atmosphere as it comes in contact with the ground. Also known as radiation fog, and in parts of California as tule fog.
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- Aerosol, Dense Fog Advisory, Evaporation-mixing Fog, Freezing Fog, GF, Ice Fog, Nieve Penitente, Radiation Fog, Rain Induced Fog, Shallow Fog, Steam Fog, Tule Fog, Upslope Fog