What is the temperament of the northeast cold vortex in Meteorological Archives? What impact will it bring to us?

? Meteorological files? Northeast cold vortex, its temper is quite? Bad temper can bring us heavy rain, blizzard, strong wind, cooling, dust and strong convection.

1. What is the northeast cold vortex? The northeast cold vortex is a column of cold air above 6000 meters above sea level. At least one closed contour line with cold center or obvious cold trough can be analyzed on the meteorological map of 500 horsepower. According to the relevant monitoring standards of the northeast cold vortex, it will appear at 35? -60? East longitude 105? - 145? The cold vortex lasting for more than 3 days is called the northeast cold vortex.

The air column in the cold vortex is cold at the top and hot at the bottom, and usually there will be thunderstorms, showers, and even unstable weather such as thunderstorms, hail and dust, and the cold vortex with strong convection will also lead to a large-scale rainstorm. The northeast cold vortex is one of the main weather systems affecting the central and eastern regions of China.

Second, the influence of the northeast cold vortex on people. For example, in the first two months, the northeast cold vortex caused a blizzard in northern Heilongjiang, and also caused some convective weather such as small hail in Henan. In Nantong, Jiangsu Province, the gale that happened last year was also formed against the background of the northeast cold vortex.

In addition, an important meteorological feature of the northeast cold vortex is that the climate types it can produce are very complicated, such as rainstorm, blizzard, gale, cooling, sandstorm, convection and so on. These weather may be generated at the same time, or they may be generated at the same time, sometimes resulting in extreme climatic conditions. For example, the strong sandstorm in Beijing at the beginning of last year was formed against the background of the northeast cold vortex.

In addition, the northeast cold vortex will also produce a cold wave, because the ground of the northeast cold vortex often moves eastward and southward with cold air during the eastward movement of the high-altitude cold vortex. If new cold air is encountered during the movement, the whole northeast cold vortex will gradually strengthen and eventually form a cold wave.

This cold wave can also affect most parts of China. In other words, the cold wave is one of the possible weather brought by the high-altitude cold vortex.