What are the five main types of fog?

Question

please give a brief description of each this is not homework i want to learn about them thank you

Answer 1

Sounds like a homework question but here you go:

Fog Types

Fog is denoted by the cooling mechanism involved. There are five main types of fog:

Radiation Fog - occurs under clear, calm skies when infrared radiation (heat) escapes to upper atmosphere and outer space and the air is cooled to its dewpoint. Sometimes called valley fog or ground fog and is the most common fog over land in the world.

Advection Fog - occurs when warm, humid air is cooled to its dewpoint by coming into contact with a cooler surface below. Snow, ice, and cold water are common surfaces that cause advection fog.

Steam Fog - occurs when cooler air rests above warmer water and vapor that evaporates into the air cools to its dewpoint. Sometimes called Arctic sea smoke.

Upslope Fog - occurs when air is forced to rise up a large slope and cools (adiabatically) to its dewpoint. Common in mountainous states.

Frontal Fog - also knows as precipitation fog and occurs when rain drops fall into unsaturated, cooler air below. As the drops evaporate, water vapor is introduced into the cooler air. Very quickly, the vapor condenses into a small fog droplet.

Answer 2

Wow Steve, you sure do ask a lot of questions. Do you ever get tired of this? There are too many questions, and I'll just answer this one because its interesting. Here you go and enjoy.

1. Radiation Fog - During a clear night, radiational cooling causes the air temperature at the surface to reach the dew point. At that point, condensation occurs, and fog forms.

2. Advection Fog - When warm, moist air moves horizontally across a cold surface, the air is cooled to the dew point, and fog forms because of it.

3. Slope Fog - When warm, moist air rises up a slope, it eventually reaches the Lifting Condensation Level (LCL), which is where the air temp equals the dew point, etc., etc.

4. Precipitation Fog - After plenty of rainfall, enough of it evaporates to saturate the air, and that results in fog formation.

5. Steam Fog (I think that's what its called) - Cool air present above warm water receives enough water vapor from evaporation to form fog.