Conditions and causes of fog formation

1, the condition of fog formation is that the water vapor reaches the maximum saturation and the temperature becomes lower.

2. The reason of fog formation When the water vapor in the air reaches a certain limit, it will reach saturation. This saturation will change with the temperature. The higher the temperature, the more water vapor in the air, and vice versa. When the water vapor in the ground air is greater than the saturated water vapor at the same temperature, the excess water vapor will condense out.

When condensed water vapor combines with tiny dust particles in the air, it becomes small water droplets or ice crystals, which is what we call fog. Generally, in the morning of spring and autumn, the water vapor in the air exceeds saturation and condenses into water droplets, because the temperature difference in the morning of this season is good, which is the main reason for the formation of fog.

Fog introduction

Fog refers to the weather phenomenon that there are countless small water droplets or small ice crystals suspended in the air near the ground, resulting in horizontal visibility less than 500 meters. A large number of small water droplets or ice crystal particles are suspended in the air near the lower level, which makes people's vision blurred. When the horizontal energy distance of relevant personnel drops below 1000 meters, it is called fog.

Anti-fog measures Try not to go out. When you have to go out, wear a mask to prevent inhalation of toxic gases. Try to exercise as little as possible in foggy days, and don't exercise in foggy days. Pedestrians should be careful when crossing the road and see the passing vehicles clearly. Vehicles and cars should drive slowly, obey the instructions of the traffic police, don't catch the car (boat), and don't crowd the ferry when it stops.