What returns to the southern sky is the warm and humid air from the South China Sea, which meets the cold air from Siberia and forms a quasi-static front in the south, resulting in uncertain wet weather. Therefore, try not to open the window facing south during the return to Nantian, so as to avoid the warm and humid air from the south entering the room and increasing the humidity in the room. In addition, in the weather with severe humidity, try not to open the window, try to reduce the entrance of humid outdoor air and keep the room dry.
Huinan (Huinan for short) is a weather phenomenon in the south of China, which usually refers to the phenomenon that the temperature starts to get warmer and the humidity rises sharply every spring. When Return to the South Sky appeared, the air humidity was close to saturation, and there were wet scenes everywhere.
South China belongs to a typical subtropical monsoon climate. Therefore, from March to April every year, warm and humid air from the South China Sea meets cold air from Siberia, forming a quasi-static front in the south, which makes the weather in the south changeable and very humid, with light rain or fog during the period, resulting in the phenomenon of returning to the south. Some cold objects begin to condense after encountering warm and humid airflow, forming water droplets on the surface of the objects. When "Returning to the South Sky" appeared, the air humidity was close to saturation. Warm and humid airflow will also bring water vapor. When you meet a cold room, it is easy to regain moisture and produce moisture. There are wet scenes everywhere, and the air seems to be able to wring out water. Dense fog is the most distinctive appearance of "returning to the south sky" According to statistics, when the phenomenon of returning to the south is serious, the visibility can be reduced to 50 meters. In the return weather in the south, some items or food are easy to get wet, and then moldy and rotten. Therefore, appropriate moisture-proof measures should be taken.