Cooling of a surface overnight that chills the air layer directly above that surface may form
A)an advection fog.
B)an upslope fog.
C)an evaporation fog.
D)a radiation fog.
E)a rime fog.

Question

Quizplus · Accepted Answer

Cooling of a surface overnight that chills the air layer directly above that surface leads to the formation of radiation fog. As the temperature drops, the air adjacent to the ground cools and becomes denser, causing it to sink and flow downhill, away from the source of cooling. This forms a shallow layer of cool, stagnant air directly above the ground, and if the humidity is high enough, this layer can become saturated and fog forms.

Cooling of a Surface Overnight That Chills the Air Layer