Which of the following is NOT a type of fog?

Stratospheric fog is not recognized as a distinct type of fog in meteorology. The other options represent well-established fog types based on different atmospheric conditions.

Radiation fog forms when the ground cools overnight, leading to the cooling of nearby air to its dew point. This often occurs in calm, clear conditions. Advection fog arises when warm, moist air moves over cooler surfaces, causing the air to cool and condense into fog. Precipitation-induced fog, also known as steam fog or frontal fog, occurs when rain falls through a layer of cold air, evaporating and cooling the air just above the ground, thereby forming fog.

Understanding these types of fog is crucial for aviation, as visibility can significantly impact flight safety and operations.