Evaporation fog produced above a surface of open water when the air is stable and relatively cold (for example, air which has moved over stretches of ice). syn. antarctic sea smoke, arctic sea smoke
Evaporation fog formed when water vapor is added to air which is much colder than the vapor's source; most commonly, when very cold air drifts across relatively warm water; also called steam fog.
A fog that forms when an outbreak of cold air settles over an expanse of open, relatively warmer water, reducing visibility to less than 1 kilometre. Also known as steam fog. (See also arctic sea smok
e, and advection fog or sea fog)
The cumulative number of degree-days below 0 degrees Celsius, calculated as the arithmetic sum of all the negative and positive mean daily air temperatures (degrees Celsius) for a specific station dur
ing the time period between the highest point in the fall and the lowest point the next spring on the cumulative degree-day time curve.
The cumulative number of degree-days below 0˚C, calculated as the arithmetic sum of all the negative and positive mean daily air temperatures (˚C) for a specific station during the time period between
the highest point in the fall and the lowest point the next spring on the cumulative degree-day time curve