When is the foggy solar term?

Fog is more common in spring from February to April.

The conditions for fog formation are cooling, humidification and condensation to increase water vapor content. A kind of fog is formed by radiation cooling, which often occurs at night and early morning when the sun is shining, the breeze is blowing gently, and the water vapor near the ground is rich and stable or the temperature is reversed. Meteorology is called radiation fog. The other is that warm and humid air moves horizontally, passing through the cold ground or water surface, and the water vapor in the air is gradually liquefied by cold to form fog, which is called advection fog in meteorology; Sometimes the fog formed by two reasons is called mixed fog. It can be seen that it is late autumn and early winter that can meet these conditions, especially in the morning of late autumn and early winter.

When the temperature is close to zero and the relative humidity reaches 100%, the water vapor in the air will condense into tiny water droplets suspended in the air, which will reduce the visibility on the ground. This weather phenomenon is called fog.

When the visibility in the atmosphere is lower than 1 km due to the condensation of suspended water vapor, meteorology calls this weather phenomenon fog. Conditions for fog formation: cooling, humidifying and increasing water vapor content. The types of fog are radiation fog, advection fog, mixed fog, evaporation fog and smoke.