Explain fog, dew, frost, dew and frost.

1. Fogging: When the water vapor is sufficient, the breeze and the atmosphere are stable, and the relative humidity reaches 100%, the water vapor in the air will condense into fine water droplets suspended in the air, which will reduce the visibility on the ground. This weather phenomenon is called fog.

2. It is more between February and April in spring.

3. Forming conditions: one is cooling, and the other is humidification to increase the water vapor content.

4. Dew: refers to liquid water condensed by water vapor in the air on ground objects.

5. In the evening or at night, due to radiation cooling, the air layer near the surface also cools down. When the temperature drops below the dew point, that is, the water vapor content in the air is supersaturated, there will be water vapor condensation on the ground or the surface of the object.

6. If the dew point temperature at this time is above zero degrees Celsius, tiny water drops will appear on the ground or ground features, which is called dew.

7. Frosting: The air near the ground is cooled by the radiation of the ground to below the frost point and condenses into white ice crystals on the ground or objects.