Which type of fog is typically associated with coastal areas?

Advection fog is commonly seen in coastal areas due to its formation process, which involves warm, moist air moving over cooler ocean waters. When the warm air meets the cold water, it cools and condenses into tiny water droplets, resulting in fog. This phenomenon is often prevalent near coastlines where temperature differences are pronounced between the air and the water, especially in situations where warm air from land moves over the ocean.

In contrast, radiation fog typically forms during clear nights when the ground loses heat rapidly, leading to cooling of the air near the surface. This type of fog is more common in inland areas rather than coastal, where wind patterns and moisture levels differ significantly.

Steam fog occurs when cold air moves over warm water, causing the water to evaporate quickly and produce fog, but this is less common along coastlines compared to advection fog. Finally, upslope fog develops when moist air rises up a slope or mountain, cooling and condensing as it ascends, which is not primarily associated with coastal environments.

Thus, advection fog is the most fitting answer for fog related to coastal areas due to its connection with the air-sea temperature dynamics prevalent in such regions.