Sources of sandstorms in Beijing

There are three theories about the source of sandstorms in Beijing:

It is considered that the main sand source in Beijing is local, and some dust comes from other places. In the mid-1980s, researchers measured the contents of heavy minerals and unstable minerals in Beijing sand. The results show that it is very different from the gravel in Horqin Sandy Land, Hunshandake Sandy Land and Mu Us Sandy Land, but close to the gravel in some valleys such as Yongding River.

It is considered that the dust of sandstorm in Beijing comes from different places, especially Bashang area in Hebei, Inner Mongolia in Middle Ages, Northwest Shanxi, Yulin area in Northern Shaanxi, and even southeastern Mongolia and eastern Kazakhstan. At the beginning of 2002, the research group of "Study on the Influence of Sandstorm and Yellow Sand on Atmospheric Particulate Matter in Beijing" of the State Environmental Protection Bureau announced that the source area and transmission path of sandstorm in Beijing had been preliminarily identified. Most sandstorms in Beijing come from overseas, and there are three transmission paths for sandstorms to enter Beijing: North Road, Northwest Road and West Road.

According to the viewpoint of multiple sources, the dust of sandstorm in Beijing is both local and foreign, that is, the initial source is the Mongolian Plateau and the desert Gobi area on the moving path of cold vortex, and the subsequent source is the area with dust around Beijing.

Where is the source of spring sandstorm in Beijing?

Shaanxi-Gansu Loess Plateau. Due to its unique geographical environment, the northwest of China is also a region where sandstorms frequently occur. The main source areas are Gurbantunggut Desert, Taklimakan Desert, Badain Jaran Desert, Tengger Desert, Wulanbuhe Desert and Mu Us Desert.

From 1999 to the spring of 2002, there were 53 sandstorms in China (1999, 2000 14, 2006 18 and 2002 12). This is the research result released by Li Huang, deputy director of China Meteorological Bureau, to the media on July 2nd. He said that in the spring of 2002, there were 12 sandstorms in northern China. It has three characteristics: concentrated occurrence period, strong occurrence intensity and wide influence range. The sources of dust weather affecting China can be divided into two types: overseas and domestic. The analysis shows that two-thirds of the dusty weather originated in southern Mongolia and was supplemented by dusty materials when passing through northern China. The sand source in China is only about one third. The dusty weather in Central Asia (Kazakhstan) is unlikely to affect the eastern part of Northwest China or even North China. The Taklimakan Desert in southern Xinjiang is a high incidence area of sandstorm weather in China, but it generally does not affect the eastern part of northwest China and North China. The path of sandstorm weather in China can be divided into northwest path, west path and north path: northwest path 1. Sandstorm weather generally originates in the central and western plateau of Mongolia or Alashan Plateau in western Inner Mongolia, and mainly affects northwest and north China. Northwest Route 2. Dust weather originated in southern Mongolia or central and western Inner Mongolia, mainly affecting the eastern part of northwest China, northern North China and most of northeast China; To the west, dusty weather originated in Gobi area in southwest or south Mongolia and desert area in western Inner Mongolia, mainly affecting northwest and north China. In the northerly route, dusty weather generally originates in the vast area south of Ulaanbaatar, Mongolia, and mainly affects the eastern part of northwest China, most of north China and southeast China.

Generally, in March and April, the cold air from Mongolia and Siberia formed by the Mongolian high pressure belt will move to the southeast, which will wrap up a lot of dust in the inland areas and form dusty weather. At this time, the warm current formed on Tianping Ocean forms Hawaiian high in the Pacific Ocean, Indian low in the Asian continent, and strong southerly wind blows from the ocean to the land. The Mongolian high, which controls the mainland, began to move from west to north, where cold and warm air currents meet. The heavy Siberian cold current comes rapidly from west to east, often forming strong winds. Beijing and eastern Inner Mongolia are alternately controlled by these two high-voltage belts. Either the southeast wind pressure reaches the northwest wind, or the northwest wind overwhelms the southeast wind.

Which province does sandstorm mainly come from?

Due to the unique geographical environment, the northwest of China is also a region with frequent sandstorms. The main source areas are Gurbantunggut Desert, Taklimakan Desert, Badain Jaran Desert, Tengger Desert, Wulanbuhe Desert and Mu Us Desert. The sources of dust weather affecting China can be divided into two types: overseas and domestic.

China has two major regions.

The first frequent area is in the northwest, mainly concentrated in three areas, namely, the surrounding area of Tarim Basin, Turpan-Hami Basin passing through Hexi Corridor, Ningxia Plain to northern Shaanxi, Alashan Plateau, Hetao Plain and Ordos Plateau in Inner Mongolia;

The second frequent area is in North China, Chifeng and Zhangjiakou, which directly affects the safety of the capital Beijing.

Which province and city in China often blows sandstorms? Where are the sources of sandstorms in Beijing and Inner Mongolia?

Shaanxi-Gansu Loess Plateau. Due to its unique geographical environment, the northwest of China is also a region where sandstorms frequently occur. The main source areas are Gurbantunggut Desert, Taklimakan Desert, Badain Jaran Desert, Tengger Desert, Wulanbuhe Desert and Mu Us Desert. From 1999 to the spring of 2002, there were 53 sandstorms in China (1999, 2000 14, 2006 18 and 2002 12). This is the research result released by Li Huang, deputy director of China Meteorological Bureau, to the media on July 2nd. He said that in the spring of 2002, there were 12 sandstorms in northern China. It has three characteristics: concentrated occurrence period, strong occurrence intensity and wide influence range. The sources of dust weather affecting China can be divided into two types: overseas and domestic. The analysis shows that two-thirds of the dusty weather originated in southern Mongolia and was supplemented by dusty materials when passing through northern China. The sand source in China is only about one third. The dusty weather in Central Asia (Kazakhstan) is unlikely to affect the eastern part of Northwest China or even North China. The Taklimakan Desert in southern Xinjiang is a high incidence area of sandstorm weather in China, but it generally does not affect the eastern part of northwest China and North China. The path of sandstorm weather in China can be divided into northwest path, west path and north path: northwest path 1. Sandstorm weather generally originates in the central and western plateau of Mongolia or Alashan Plateau in western Inner Mongolia, and mainly affects northwest and north China. Northwest Route 2. Dust weather originated in southern Mongolia or central and western Inner Mongolia, mainly affecting the eastern part of northwest China, northern North China and most of northeast China; To the west, dusty weather originated in Gobi area in southwest or south Mongolia and desert area in western Inner Mongolia, mainly affecting northwest and north China. In the northerly route, dusty weather generally originates in the vast area south of Ulaanbaatar, Mongolia, and mainly affects the eastern part of northwest China, most of north China and southeast China. Generally, in March and April, the cold air from Mongolia and Siberia formed by the Mongolian high pressure belt will move to the southeast, which will wrap up a lot of dust in the inland areas and form dusty weather. At this time, the warm current formed on Tianping Ocean forms Hawaiian high in the Pacific Ocean, Indian low in the Asian continent, and strong southerly wind blows from the ocean to the land. The Mongolian high, which controls the mainland, began to move from west to north, where cold and warm air currents meet. The heavy Siberian cold current comes rapidly from west to east, often forming strong winds. Beijing and eastern Inner Mongolia are alternately controlled by these two high-voltage belts. Either the southeast wind pressure reaches the northwest wind, or the northwest wind overwhelms the southeast wind.

Where does the sandstorm in Beijing come from?

Outer Mongolia is the birthplace of sandstorms in Beijing. These problems are caused by human behavior towards nature. Due to the continuous felling of trees in the North China Plain and overgrazing of grasslands in Inner Mongolia, land desertification has been caused. As long as there is strong wind, there will be sandstorms. Therefore, Dharma believes that we human beings should wake up now. Work together to protect the environment. Otherwise, it won't be long before the sandstorm in Beijing becomes more serious.

Northwest China, the main source of sandstorms in Beijing?

There have been different opinions about the main sources of sandstorms in Beijing. In the past, it was always thought that the sand source was Inner Mongolia or/and the northwest of China. However, after careful study in recent years, it is considered that the main sand source of sandstorms in Beijing comes from the sand under the surface of the local dry river bed around Beijing, that is, "sand on the spot". Of course, there are also dust from Inner Mongolia and even the northwest, but it is mainly local.

Did China blow the Japanese sandstorm?

So which country does our sandstorm come from? The last sandstorm did not come from China, but from outer Mongolia.

A few days ago, Japan was hit by a sandstorm, which was the first time since 1967. However, the Japanese media said that it was not produced by itself, but was "blown from China". It seems that the wind in China is very strong, and anyone can cross the ocean to send sand to the Japanese.

According to Japanese media reports, the Japan Meteorological Agency said that sandstorms were observed on the 7th, covering a vast area from western to northern Japan, including parts of kanto region.

* * * The current affairs news agency reported on May 7 that the Japan Meteorological Agency said that the strong wind blowing from China carried the yellow sand until the 8th, mainly concentrated in the western part of Japan. The Meteorological Agency warned that traffic may be disturbed due to low visibility.

According to the Japan Meteorological Agency, in Kumamoto Prefecture, the visibility from 3 am to 6 am on the 7 th has dropped to 8 kilometers. When the visibility drops below 10 km, the smog can be clearly seen from a distance.

On the 7th, dusty air was observed in Hokkaido, Northeast China, Central China, Kansai and Kyushu. Dust weather also appeared in Gunma and Ibaraki counties.

The sand blowing observed in western Japan on the 6th was the first time this year. This is the latest sandstorm weather that has been monitored since 1967 in Japan.

According to reports, on the 4th, Beijing was hit by a severe sandstorm, which led to the cancellation of several flights. For health reasons, officials called on local residents to stay indoors.

The main causes of sandstorm formation

"Rich dust sources, strong winds and extremely unstable atmosphere are three indispensable factors that cause sandstorms. The latter two are mainly related to meteorological conditions, while the former is related to land desertification. Therefore, although land desertification is not the main factor causing sandstorms and their changes, it is an important factor, so we must never ignore the control of land desertification. " ?

Haha, does Qian Zhengan, a sandstorm expert, sometimes make mistakes? ! !

Sandstorm, no doubt, is caused by desertification of the land! ! There is an absurd saying that "land desertification is not the main factor causing sandstorms and their changes"! !

Can you still blame the airflow? The shortage in New Zealand is extremely high. Air flow is a natural phenomenon. Land desertification is man-made. It is caused by our current wrong practices: grassland desertification and land desertification. The past: the wind blows and grass sees cattle and sheep, and now quicksand is everywhere. A mistake is a mistake. Don't hide it. If it is not changed, it will bring irreparable disaster to future generations.

I can see the level of "expert" now.

Why are there so many sandstorms in Beijing?

There are three theories about the source of sandstorms in Beijing:

It is considered that the main sand source in Beijing is local, and some dust comes from other places. In the mid-1980s, researchers measured the contents of heavy minerals and unstable minerals in Beijing sand. The results show that it is very different from the gravel in Horqin Sandy Land, Hunshandake Sandy Land and Mu Us Sandy Land, but close to the gravel in some valleys such as Yongding River.

It is considered that the dust of sandstorm in Beijing comes from different places, especially Bashang area in Hebei, Inner Mongolia in Middle Ages, Northwest Shanxi, Yulin area in Northern Shaanxi, and even southeastern Mongolia and eastern Kazakhstan. At the beginning of 2002, the research group of "Study on the Influence of Sandstorm and Yellow Sand on Atmospheric Particulate Matter in Beijing" of the State Environmental Protection Bureau announced that the source area and transmission path of sandstorm in Beijing had been preliminarily identified. Most sandstorms in Beijing come from overseas, and there are three transmission paths for sandstorms to enter Beijing: North Road, Northwest Road and West Road.

According to the viewpoint of multiple sources, the dust of sandstorm in Beijing is both local and foreign, that is, the initial source is the Mongolian Plateau and the desert Gobi area on the moving path of cold vortex, and the subsequent source is the area with dust around Beijing.

Where do sandstorms often occur in China?

Sandstorms mostly occur in the northwest of China, generally in autumn and winter, with dry weather, sandy soil and strong wind.