How is fog formed?

Question

I live in London and you may have heard we have had loads recently... Also, why does it make me want to speak like a cockney?

Well I was planning on flying a small aircraft later but want to down this bottle of Jack Daniels first!

Answer 1

Check this out :
Most types of fog form when the relative humidity reaches 100% at ground-level. Fog can form suddenly, and can dissipate just as rapidly, depending what side of the dewpoint the temperature is on.

An important exception to the general rule is sea fog. This is due to the peculiar effect of salt. Clouds of all types require minute hygroscopic particles upon which water vapor can condense. Over the ocean surface, the most common particles are salt from salt spray produced by breaking waves. Except in areas of storminess, the most common areas of breaking waves are located near coastlines, hence the greatest densities of airborne salt particles are there. Condensation on salt particles has been observed to occur at humidities as low as 70%, thus fog can occur even in relatively dry air in suitable locations such as the California coast. Typically, such lower humidity fog is preceded by a transparent mistiness along the coastline as condensation competes with evaporation, a phenomenon that is typically noticeable by beachgoers in the afternoon.

Answer 2

Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges.

The foggiest place in the world is the Grand Banks off the island of Newfoundland, Canada. Fog is frequent here as the Grand Banks is the meeting place of the cold Labrador Current from the north and the much warmer Gulf Stream from the south. The foggiest land areas in the world are Point Reyes, California and Argentia, Newfoundland, both with over 200 foggy days a year.

Most types of fog form when the relative humidity reaches 100% at ground-level. Fog can form suddenly, and can dissipate just as rapidly, depending what side of the dewpoint the temperature is on.

An important exception to the general rule is sea fog. This is due to the peculiar effect of salt. Clouds of all types require minute hygroscopic particles upon which water vapor can condense. Over the ocean surface, the most common particles are salt from salt spray produced by breaking waves. Except in areas of storminess, the most common areas of breaking waves are located near coastlines, hence the greatest densities of airborne salt particles are there. Condensation on salt particles has been observed to occur at humidities as low as 70%, thus fog can occur even in relatively dry air in suitable locations such as the California coast. Typically, such lower humidity fog is preceded by a transparent mistiness along the coastline as condensation competes with evaporation, a phenomenon that is typically noticeable by beachgoers in the afternoon.

Fog occasionally produces precipitation in the form of drizzle. Drizzle occurs when the humidity of fog attains 100% and the minute cloud droplets begin to coalesce into larger droplets. This can occur when the fog layer is lifted and cooled sufficiently, or when it is forcibly compressed from above. Drizzle becomes freezing drizzle when the temperature at the surface drops below the freezing point.

Answer 3

Fog is composed of droplets of water suspended in the air near the Earth's surface. The presence of these droplets act to scatter the light and reduce the visibility near the ground. The formation of a fog layer occurs when a moist air mass is cooled to its saturation point. This cooling can be the result of radiative processes, advection of warm air over cold surfaces, evaporation of precipitation, or air being adiabatically cooled while being forced up a mountain. sorry hope this has helped...

Answer 4

Fogs are composed of fine droplets of water suspended in the air near the Earth's surface. The presence of these droplets act to scatter the light and thus reduce the visibility near the ground.

The formation of a fog layer occurs when a moist air mass is cooled to its saturation point (dew point). This cooling can be the result of radiative processes (radiation fog), advection of warm air over cold surfaces (advection fog), evaporation of precipitation (precipitation or frontal fog), or air being adiabatically cooled while being forced up a mountain (upslope fog).

Answer 5

Fog is a cloud in contact with the ground.

Answer 6

water vapors or moistures accumulate together when cool n no wind,then it becomes very thick n dense to form fog.so it's very common to find fog in cold places here n there.

best wishes.

Answer 7

You're not planning on flying any aircraft, are you?

Answer 8

cor luv a duck matey,
i ain`t got a scooby

Answer 9

dont know but my flights been cancelled due to it . hate it now! merry xmas

Answer 10

as above darling