ilmatyynyjä

Ilmatyynyjä, also known as the "ice fog" or "frost fog," is a meteorological phenomenon characterized by the presence of fog in extremely cold temperatures. This type of fog typically occurs in winter when the air temperature is below freezing, and the fog droplets are supercooled, meaning they remain liquid even at temperatures below 0 degrees Celsius. Ilmatyynyjä is often associated with clear skies and calm winds, as these conditions are conducive to the formation of fog. The fog itself can be dense and can significantly reduce visibility, making it hazardous for travel and outdoor activities. The term "ilmatyynyjä" is derived from the Finnish language, where "ilma" means air and "tyyny" means fog. This phenomenon is not unique to Finland and can be observed in other cold regions around the world.