A radiation fog requires which of the following in order to form?
A)a warm body of water and a cold breeze
B)cold air moving up a slope
C)high relative humidity and clear nighttime skies
D)warm air moving over a cold surface

Question

Quizplus · Accepted Answer

Radiation fog forms on clear, calm nights when the ground cools rapidly by radiation. This cools the air near the ground, causing the relative humidity to increase. If the relative humidity reaches 100% and the temperature of the air near the ground reaches the dew point, fog will form. Therefore, high relative humidity and clear nighttime skies are required for radiation fog to form. The other options listed do not fit the conditions necessary for radiation fog to form.

A Radiation Fog Requires Which of the Following in Order