What is the reason behind the snowstorm in Inner Mongolia interpreted by meteorologists?

Meteorologists explained that the main reason behind the snowstorm in Inner Mongolia was that the Xinjiang cold air trough moved eastward gradually strengthened into a cold vortex in the process of moving eastward. Because of the slow moving speed of cold vortex, it is easy to cause long-term and large-scale rain, snow, strong wind and cooling weather.

These two extreme snowfalls are special, one from Bohai Bay in the south and the other from the Sea of Japan in the east. Southeast Inner Mongolia is located at the eastern foot of Daxing 'anling Mountains. The water vapor from the East Road is blocked by Daxinganling and will accumulate for a long time. At the same time, the water vapor rising along the mountain will also condense, which is easy to form snowfall. Therefore, in June, 5438+065438+ 10, southeastern Inner Mongolia is prone to extreme snowstorms.

The thickness of snow is also related to the temperature and the moisture content of snowflakes. The snow thickness per unit precipitation will change obviously with temperature. When the temperature reaches -6℃ to -8℃, the snow depth per unit snowfall will reach the maximum. With the increase of temperature, the depth of snow per unit snowfall will decrease obviously. During the snowfall, the water vapor condition is good and the temperature is suitable, so the thickness of snow is also deep.

From the night of 202 1 1 1 5 to 7, the snowfall at 32 stations in Inner Mongolia exceeded the historical extreme, namely Xiwu Banner in Xilin Gol League, Naiman Banner in Tongliao City and Hure Banner.

Influence of Cold Wave on Agriculture and Animal Husbandry Production

Blizzard and severe cooling accompanied by strong cold wave pose a serious threat to livestock. The sharp drop in temperature is most likely to make livestock suffer from colds, tracheitis and other diseases, and it is easy to cause "sheep pile" (the phenomenon that sheep pile together when it is cold), which leads to abortion of female livestock, sometimes crushing livestock, and severe cooling will freeze them to death.

At the same time, the amount of snowfall in this cold wave is large, and the thickness of snow in the south of Tongliao City, the south of Chifeng City and the south-central part of southwest Xilin Gol League exceeds 15 cm, which will have an impact on protected agriculture.

It is suggested that local people should do a good job of heat preservation in greenhouses at night in areas with large temperature drop, take measures such as covering grass and heat preservation layer, and use geothermal lines for artificial heating when necessary to prevent crops from being harmed by low temperature freezing; Do a good job in artificial lighting of protective agriculture in snowfall areas to enhance the resistance of crops in cold weather.

In areas with strong winds, facilities and structures should be reinforced in time, and greenhouses should be covered with cold-proof films as far as possible. In pastoral areas, sheds and forage grass are the material basis to resist natural disasters and ensure the safety of livestock through winter and spring. After the snowfall, it is necessary to clear the snow on the roof of the shed in time, transform and strengthen the livestock shed (fence), and actively do a good job in keeping the livestock cold and warm to prevent the livestock from freezing and frostbite.

Herdsmen should pay attention to forage, besides hay, they should also feed a small amount of soybean and corn concentrate to enhance the cold resistance of livestock and prevent fat loss.