How to pronounce cold vortex?

Cold vortex is short for cold vortex. It is pointed out that the center of the cold vortex in the sky (generally above 700 hectopascals) is colder than the surrounding vortex, and its intensity increases with the increase of height. North China cold vortex and Northeast cold vortex in spring and summer.

Cold vortex, also short for "cold vortex", is a kind of "vortex whose center temperature is lower than the same height around it" from high latitude, and its intensity increases with the increase of height. Cold vortex refers to a vortex weather system located at high altitude with the central air pressure lower than the surrounding air pressure. Vortex whose center temperature is lower than the ambient temperature is called cold vortex. Take the southwest vortex as an example. It is a kind of low vortex weather system which has the greatest influence on the weather in China. It originated in the southwest of China, hence its name.

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Cold vortex mainly refers to the cold closed low-pressure circulation system in the middle and upper troposphere at middle and high latitudes, and the temperature near the center of cold vortex is obviously lower than that around it. The cold vortex in the upper air can extend vertically from several kilometers in the middle of the troposphere to the altitude of 10 km, and the air column in the cold vortex is in an unstable state of being cold at the top and warm at the bottom.

Therefore, unstable weather often occurs, such as showers, thunderstorms and even thunderstorms or hail. Sometimes, the strong development of cold vortex will also cause large-scale rainstorm weather. Because there is a small stream of cold air moving south at the back (west) of the cold vortex, and because the cold vortex moves slowly, it will cause intermittent rainy weather in the area affected by the high-altitude cold vortex for several days.