China returned to Nantian, the most horrible place.
Returning to Nantian usually occurs in southern China, especially in coastal areas of China. In the worst time of returning to Nantian, you can turn on the air conditioner at home, and the moisture on the ground and walls will soon return to a dry state.
Returning to Nantian is a phenomenon of warmer weather, which generally appears in February and March in spring. The main reason is that after the cold air leaves, the warm and humid airflow quickly counterattacks, resulting in an increase in temperature and air humidity. Some cold objects are easy to produce water droplets when they encounter warm and humid airflow.
The principle of returning to Nantian:
From the meteorological point of view, after a long period of low temperature, the surface of the object is completely cold. When the temperature of the object is less than or equal to the dew point temperature, the water vapor in the air reaches saturation and begins to condense on the surface of the object, producing water droplets and returning to the south.
The so-called dew point temperature refers to the temperature when the air temperature drops to saturation under the condition that the moisture content and air pressure in the air remain unchanged. The main reason is that after the cold air passes, the warm and humid airflow quickly counterattacks, resulting in an increase in temperature and air humidity. Some cold objects are easy to produce water droplets when they encounter warm and humid airflow.