Causes and elimination of fog

Fog is caused by cold air flowing through warm water. Water vapor will quickly enter the atmosphere through evaporation and gradually drop below the dew point to condense, and finally form fog. Fog is a fine water droplet (fog droplet) which is condensed by water molecules evaporated from the surface under the influence of cold air and suspended in the air.

The reasons for fog elimination are as follows: due to the influence of solar radiation, when the ground absorbs heat continuously, it will naturally dissipate shortly after sunrise or after the wind speed increases. Also, the appearance of warm and humid air is uncertain and often lasts for a long time. Advection fog will not dissipate until the wind direction changes or stops.

Extended data:

Foggy weather is common in winter. Due to the weak resistance of the elderly and children, it is recommended to pay more attention to diet. Old people and children should keep scientific life rules, avoid overwork and drink plenty of water. Pay attention to a light diet, eat less irritating food, eat more tofu, milk and other foods, and supplement vitamin D when necessary.

Eat more tofu and milk in foggy days. At this time, due to the decrease of sunshine in foggy days, children's ultraviolet radiation is insufficient, vitamin D production in the body is insufficient, and calcium absorption is greatly reduced, which will seriously cause rickets in infants and slow down children's growth and development.

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