Common Weather Systems and Their Influence on the Weather in China

Common weather systems and their impacts on the weather in China are as follows:

Cyclone and anticyclone are two basic weather systems. In the cyclone area, the airflow converges from the outside to the inside, and the airflow rises with the water vapor in the ground air layer, and cools and condenses at high altitude to form clouds and rain. Therefore, the weather in cyclone areas is generally rainy. In the anticyclone area, the airflow diverges from the inside out, mainly downward airflow, usually sunny.

Because China is located in the mid-latitude area, cyclone and anticyclone activities are quite frequent. Many severe weather changes in Chinese mainland are mainly caused by cyclones and anticyclones. For example, in winter, the weather in the Mongolian Plateau in the north of China is very cold, often forming an anticyclone high pressure center.

Once this cold anticyclone goes south, it will bring a strong cold wave to the vast areas of China and seriously affect the weather in China. Another example is the typhoon, which is a very powerful tropical cyclone, accompanied by violent storms and stormy waves.

What is a weather system?

Common weather systems include fronts, cyclones and anticyclones. Fronts are divided into warm front, cold front and quasi-static front. Weather system usually refers to the atmospheric motion system with typical characteristics, such as high pressure, low pressure, high pressure ridge and low pressure trough, which cause the change and distribution of weather.

Weather system is an atmospheric motion system with typical characteristics, which is divided into high pressure, low pressure, high pressure ridge and low pressure trough according to the spatial distribution of meteorological elements. Sometimes it refers to the wind distribution system, such as cyclone circulation, anticyclone circulation, shear line and so on. Sometimes it also refers to the system of temperature distribution, such as high temperature zone, low temperature zone, front zone and so on. Sometimes it refers to the distribution system of weather phenomena, such as thunderstorms and tropical clouds. There is often a certain configuration relationship between this element system and another element system.