How is the humid weather formed?

Usually wet weather is caused by the resurgence of the weather. The phenomenon of weather resurgence, also known as resurgence, mainly occurs at the bottom of the room. There are two reasons for the warmer weather. In the first case, the cold air just left and the weather began to get warmer, but the surface temperature was still low. At this time, if the weather is humid and the relative humidity of the air is above 90%, the warm and humid outdoor airflow enters the room and meets the low temperature, smooth and non-absorbent ground, which will condense into water and gather on the floor and walls in large quantities, and then produce moisture regain or moisture regain, just like sweating. Once the climate turns fine and dry, the resurgence phenomenon can be eliminated. In the second case, the water in the foundation soil under the ground cushion rises due to capillary action, and the vaporous water permeates upward, which makes the ground material wet, and then deteriorates and makes the whole room wet. Usually, the rainy season when the weather turns warm at the turn of spring and summer is the first situation.