The reasons for the formation of advection fog

The reasons for the formation of advection fog are as follows.

I am willing to further explain the reasons for the formation of advection fog.

First, we need to know what advection fog is. Advection fog is a kind of fog formed by the cooling of the lower part when warm and humid air flows on the cold underlying surface. This kind of fog usually occurs in winter and spring, especially in coastal areas.

The formation of advection fog needs two key conditions: one is warm and humid air, and the other is cold underlying surface. When warm and humid air flows on the cold underlying surface, the warm and humid air will reach saturation due to the temperature drop, thus forming fog.

Specifically, when warm and humid air flows on the cooler underlying surface, the cold air on the underlying surface will reduce the temperature of the warm and humid air. As the temperature decreases, the water vapor in the warm and humid air begins to condense, forming water droplets or ice crystals. These water droplets or ice crystals will be distributed in the whole atmosphere with the flow of air, thus forming advection fog.

Advection fog is characterized by its long duration, wide range and large thickness. This is because the formation of advection fog needs continuous wind to keep warm and humid air flowing on the colder underlying surface. If the wind stops and the source of warm and humid air is interrupted, the fog will soon dissipate.

In addition, the vertical thickness of advection fog can range from tens of meters to two kilometers, and the horizontal range can reach hundreds of kilometers. This large-scale advection fog may have an impact on aviation, traffic and weather forecast.

In meteorology, advection fog is an important phenomenon, because it can change the temperature and humidity distribution of the atmosphere, thus affecting the changes of weather and climate. In addition, advection fog may be accompanied by other weather phenomena, such as stratus clouds, broken rain clouds and Mao Mao rain.

Generally speaking, the formation of advection fog is due to the cooling of the lower part when warm and humid air flows on the cooler underlying surface. This kind of fog usually occurs in winter and spring, especially in coastal areas.

Its characteristics are long duration, wide range and large thickness, which may have an impact on aviation, traffic and weather forecast. At the same time, it is also an important phenomenon in meteorology, which can change the temperature and humidity distribution of the atmosphere, thus affecting the change of weather and climate.