Why does fog come in winter?

Question

whats the scientific explanation of fog/smog ?

Answer 1

Fog simply occurs when the air temperature reaches the dewpoint. For example, in the sky, clouds form when the air temperature above you teaches the dewpoint several thousand feet off of the ground...

Fog is very tiny droplets of water in the air that has turned from a gas (moisture in the air) back to a liquid (droplets) again. This is much like a coffeepot making steam that condenses on the lid of the coffeepot. The gas is turning back into a liquid.

In western states where the humidity is lower than East of the Rocky Mountains, fog will form at a higher temperature than the Western States because the dewpoint is higher. A perfect example of this is if you were to travel from Los Angeles to Miami on an airliner, When you step off the plane in Florida, you will immediately begin to sweat because the dewpoint will be in the mid to upper 70's, whereas, the dewpoint when you left Los Angeles was probably in the mid 50's (meaning there was also less moisture in the air).

I live in the Central Valley of California, and the only time of the year where the temperature gets cold enough to go below the dewpoint is this time of year-Winter. We get what we call "Tule Fog" from December to February.

Mack

Answer 2

Valley fog forms in mountain valleys, often during winter. It is the result of a temperature inversion caused by heavier cold air settling into in a valley, with warmer air passing over the mountains above. It is essentially radiation fog confined by local topography, and can last for several days in calm conditions. In California's Central Valley, Valley fog is often referred to as Tule fog.

Fog can form in a number of ways, depending on how the cooling that caused the condensation occurred:

Radiation fog is formed by the cooling of land after sunset by thermal (infrared) radiation in calm conditions with clear sky. The cool ground produces condensation in the nearby air by heat conduction. In perfect calm the fog layer can be less than a metre deep but turbulence can promote a thicker layer. Radiation fog is common in autumn and usually does not last long past sunrise.

Cold ground that is damn will create more fog when warmer air travels over it, in the winter the ground stays much colder than the air does because air changes with weather.

Answer 3

Fog isn't just in winter, you can find it any month. Most times you will have fog in the morning or at night. This is due to the difference in temperature in the air and on the ground. This creates what we see as fog.

Answer 4

it really is so because body temperature is maintained in all healthful adults round 37 degree centigrade. So the exhaled breath is fairly a lot of that temperature. even as the exterior temperature is amazingly decrease say 10 ranges or a lot less then the exhaled air containing moisture takes this style of fog.

Answer 5

In the San Francisco Bay Area we get the vast majority of our fog in the SUMMER

Answer 6

advection, convection, all types of fog occures when two temp (land and water) usually meet, one is warmer than the other and "BANG" ya got fog.

Answer 7

due to condensation of water vapour in air as the temperatures are very low.

Answer 8

Cause its cold