How terrible is the wet and cold in the south?

The wet and cold weather in the south is prone to freezing rain, and the infrastructure used in the south is basically not suitable for use in freezing rain. After freezing rain, it is easy to cause snow and ice, which is harmful to industrial and agricultural production such as wired communication and power transmission, transportation, fruit trees and crops.

Many people think that winter in the south is colder than winter in the north. Some netizens joked that "dry and cold in the north is a physical attack, and you can easily defend yourself by wearing more clothes; The wet cold in the south is a magical invasion. It's no use wearing more clothes. You have to be resistant! "

Rheumatoid arthritis is a kind of immune system disease, which is a common and frequently-occurring disease in southern China, and it is related to the wet and cold winter in southern China. Humidity and cold make the human body's resistance decline, which often leads to the outbreak of influenza in early winter in the south.

Extended data

The wetter the air, the greater its thermal conductivity. In winter, the greater the relative humidity of the air, the easier it is for the human body to dissipate heat, and the colder it will feel. The south is wet and cold, and the north is dry and cold. At the same temperature, wet cooling is colder than dry cooling. When the weather is dry and cold, it blows dry wind. Although cool, it has poor thermal conductivity, and it is not easy to penetrate into the body and take away heat.

The south is bitterly cold and wet. Although the temperature is not as low as that in the north, it is very permeable. Wet cooling does not mean that there is a lot of water vapor in the air, but that the air is full of droplets with a diameter of only a few microns. Although this kind of droplet is invisible to human eyes, it is easy to stick to human skin and take away the heat of the body with evaporation, which makes people feel cold.

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