Interpretation of quasi-static front terms in South China

The terms of quasi-static stop front in South China are explained as follows:

South China quasi-stationary weather front, also known as Nanling stationary front, refers to a quasi-stationary front located in South China and distributed in the east-west direction. When it is located in the northern part of the South China Sea, it is also called the static front of the South China Sea.

Its formation is mostly caused by the weakening of cold air after going south and the blocking of Nanling mountains. It often appears with the air shear line. It is easterly to the north and southerly to the south, with obvious precipitation, which is an important weather system affecting South China.

South China quasi-stationary weather front, also known as Nanling stationary front, refers to a quasi-stationary front located in South China and distributed in the east-west direction.

When it is located in the northern part of the South China Sea, it is also called the static front of the South China Sea. Its formation is mostly caused by the weakening of cold air after going south and the blocking of Nanling mountains. It often appears with the air shear line. It is easterly to the north and southerly to the south, with obvious precipitation, which is an important weather system affecting South China.

Jianghuai quasi-static front: the formation of plum rain-Jianghuai quasi-static front, from the Jianghuai valley in China to Japan and South Korea, has a continuous rainy period from June to July in early summer every year, with more precipitation and more precipitation times, which coincides with the plum yellow ripening season in the south of the Yangtze River, so it is called "plum rain".

Kunming quasi-static front: Kunming quasi-static front, also known as Yunnan-Guizhou quasi-static front, is an atmospheric phenomenon in Yunnan-Guizhou Plateau, which is mainly formed by the metamorphic polar continental air mass and southwest airflow blocked by Yunnan-Guizhou Plateau topography. Clouds are low and thin, and it is easy to form continuous rainy weather. This weather phenomenon mostly occurs in winter, and the number of winter days accounts for about half of the whole year.

Tianshan quasi-static front: After the weak cold air mass from Siberia and the North Atlantic enters the Junggar Basin, it is blocked by Tianshan Mountain, which makes the cold front stagnate and often forms a topographic front, resulting in cloudy, foggy or light snow weather.

The excessive precipitation in winter and spring in the northern slope of Tianshan Mountain and most parts of northern Xinjiang is related to the quasi-static frontal activity in Tianshan Mountain. Tianshan quasi-static front is one of the main quasi-static fronts affecting China.