What is white hair wind? (Appears in Langteng)

White-haired wind with claws and claws

Refers to strong winds, cooling and snowfall. White-haired wind is a local name for this kind of weather in northern China. It is named because the snow on the ground raised by strong winds, like white hair, poses a great threat to grazing livestock. Also known as white disaster and snowstorm. It is a unique weather phenomenon in northern winter, especially in the north of the Great Wall. A big white-haired wind can cause meteorological disasters.

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Weather characteristics and hazards

When there is white hair wind, the grassland is covered with snow. Strong wind blows the snow on the ground and the falling snow in the clouds all over the sky, making the ground and the sky white and the visibility extremely poor. Because the ground is covered with snow, strong winds often blow down cowsheds, scattering cattle and sheep, causing great disasters to animal husbandry and seriously affecting transportation.

When a snowstorm (white-haired wind) comes, the herds are often frightened and easily separated. Some of them fell into ravines or snow pits and died, while others died of excessive physical exertion and sweating. During the snowstorm, respiratory diseases also increased significantly.

When "white hair wind" appears in pastoral areas in winter and spring, strong winds roar and snowflakes fly all over the sky, resulting in horizontal visibility less than 10 km, and sometimes less than 1 km. The "white-haired wind" weather made nomadic herders and sheep lose their way and the traffic was seriously blocked. At the same time, due to the cold weather and lack of food and grass, people were injured and frozen, and livestock froze to death.

In meteorology, the white-haired wind is called snow blowing (the horizontal visibility is within 1.0- 10.0 km) or snowstorm (the horizontal visibility is less than 1.0 km). It often appears in strong winds and blizzards, or encounters 5-6 winds after repeated snowfall and deep snow on the ground, which rolls up loose snow and reduces visibility in the sky. Therefore, "white hair wind" is a weather phenomenon caused by strong winds, and it is also one of the meteorological disasters in pastoral areas.

When the white-haired wind occurred, the grassland was covered with snow, and the depth of snow exceeded 15cm, so it was impossible to graze. If the cedar falls, it is still possible for horses and sheep to pull open the snow layer and eat grass; If the snow begins to warm and then cools down, an ice shell will form on the surface of the snow. Animals who eat grass will not only eat grass, but also be easily scratched by the ice shell. At present, the herding methods of herders are constantly changing, from nomadic to settled farming, which greatly improves the ability to resist natural disasters such as "white hair wind". In addition, the weather forecast was transmitted to the pastoral areas in different ways in time, and the local herders prepared for the snowstorm in advance, and the losses caused by the snowstorm on the grassland were gradually decreasing.