Why is it colder in winter in the south than in the north?

The south is located in the subtropical monsoon climate, and the rain is wet, so it is wet and cold. What kind of cold is wet and cold? If the north and south are also zero degrees, put on a down jacket to keep out the cold. In the north, you can keep your body temperature from the cold; In the south, it's like putting on a semi-wet down jacket, and it's terribly cold. You can imagine how cold it is. ""Two thick quilts are not enough, and my feet are not warm with cold. " "It's as cold inside and outside, and it's a test to sleep and get up." "It seems that winter will not reach zero degrees Celsius. When a gust of wind blows, my ears will fall off "

Wet cold refers to cold weather, low temperature accompanied by rain, less sunshine, high relative humidity and small temperature difference between day and night. Because the humidity in the air in the south is relatively high, there is more moisture in the air that can effectively absorb moisture, and the wet and cold air has strong permeability, and finally more heat is taken away from people's bodies by moisture. So most people think that dry cold is not cold, and wet cold is really cold. Humidity and cold make people feel colder, because in the cold winter, people will lose more heat when they are in contact with the outside world, and at the same time keep a certain body temperature, so that the body emits too much heat. The thermal conductivity of humid air is much greater than that of dry air, so the greater the relative humidity of air, the faster the heat of human body will dissipate, and people will feel colder. In addition, there is heating in the north, even if it freezes into a dog outside, it is as cold as the outside of the house in the south, or even not as warm as the outside, so the south is colder than the north.