How to pronounce cold vortex

Cold vortex: lěng wō.

Cold vortex is the abbreviation of cold low vortex. It refers to a cold low vortex that appears in the air (generally above a height of 700 hPa). The center of the vortex is cooler than the surrounding vortex, and its intensity increases with height. The North China Cold Vortex and Northeast Cold Vortex appear over North my country and Northeast China in spring and summer.

Cold vortex, also the abbreviation of "cold vortex", is a "low vortex with a central temperature lower than the surrounding surroundings at the same height" from high latitudes, and its intensity increases with height. A cold vortex refers to a vortex weather system that is located at high altitude and has a lower central pressure than its surroundings. A low vortex with a lower central temperature than its surroundings is called a cold vortex. Take the southwest vortex as an example. It is a low-vortex weather system that has the greatest impact on China's weather. It is generated in southwest China, hence its name.

Characteristics

Cold vortex mainly refers to the cold closed low-pressure circulation system that exists in the middle and upper troposphere in mid-to-high latitudes. The temperature near the center of the cold vortex is significantly lower than the surrounding areas. The high-altitude cold vortex can extend vertically from the middle of the troposphere of several thousand meters to an altitude of 10 kilometers. 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 such as showers, thunderstorms and even thunderstorms, strong winds or hail often occur. Sometimes, a strongly developed cold vortex can also cause a large-scale heavy rain. Because small streams of cold air continue to move southward from the rear (west side) of the cold vortex, and because the cold vortex moves slowly, bursts of rain will occur for several days in the area affected by the high-altitude cold vortex.