Beijing welcomes the strongest dust storm this year. How did this dusty weather come from?

According to the explanation of sandstorm weather by the Central Meteorological Observatory, sandstorm weather is mainly caused by Mongolian cyclone and cold air on the ground. April 19 to April 2 1 2022 is the most serious period of sandstorm weather, during which the maximum wind power can reach 7-9 gusts, and the wind power can even reach 1 1 in some areas.

According to Rao Qin Xiao, chief forecaster of the Central Meteorological Observatory, this windy and dusty weather has the characteristics of "strong wind and great influence of dust", and its influence area is extremely wide. First of all, it develops from west to east. This sandstorm weather is the biggest since the northern spring.

Sandstorm weather is actually the convection of cold air and hot air, resulting in hurricanes, and then the wind rolls up yellow sand when passing through the desert, forming sandstorm weather.

My family is from Chongqing. When I was a child, when I was about seven or eight years old, I once saw a sandstorm. That was more than 90 years ago. Sandstorms mainly come from the north, because the ecological environment was not as good as it is now, and a large number of trees were cut down. When it is windy in spring, I can see the yellow sky, and the yellow sand falling from the sky can be seen on the leaves and grass leaves. Whenever such weather happens, my father always looks at the sky and says sadly:

After 2000, Huangsha was basically never seen again. Because the country has implemented the policy of returning farmland to forests, the ecological environment has been well protected, a large number of farmers have flooded into cities, and many places have replanted trees, which is also the reason why there has been no sandstorm weather in Chongqing in recent years.

Causes of sandstorm weather

First, the wind

Wind is formed by convection of hot and cold air. This year's sandstorm in Beijing is mainly caused by a cold air cyclone coming from northern Mongolia, and then passing through some desert areas in the north, producing cold and hot air convection and forming strong winds, thus rolling up yellow sand and forming this sandstorm. So the wind is the chief culprit of sandstorm weather.

Second, sand.

The sand source of sandstorm is the most important part of sandstorm. The sand source of this sandstorm mainly comes from the central and western Inner Mongolia and Xinjiang Basin, because these areas have dry climate and many deserts and Gobi Desert. When the wind passes through these areas, the sand is rolled up, forming this sandstorm. So Shayuan is an accomplice of sandstorm weather.

Third, ecological factors.

Ecological factors are the main reasons for the formation of sandstorms. If we can put green clothes on the desert, turn the vast desert in the north into fertile fields and forests, and beautify the Gobi Desert into a piece of forest farm, we can not only form a modern grain base for large-scale mechanized planting, but also fundamentally solve the sandstorm problem. Isn't that killing many birds with one stone!

? Several key points of turning desert into mechanized fertile land.

1, solve the water source

The area of the ocean accounts for 70.8% of the total area of the earth, but human beings are worried about the difficulty of getting water in desert areas. If a water pipeline is built in the desert area of northern China, the water intake point can be located at the mouth of the Yangtze River, so that most of the water flowing out of the Yangtze River can be used to build a desert and solve the water source problem of the desert.

2, the use of large construction machinery

The advantage of establishing mechanized farms in desert areas is that the terrain is flat and can be mechanized on a large scale, instead of being as troublesome as the zero plots contracted by farmers now. The desert is like a blank sheet of paper, just showing a brush and depicting beautiful scenery. After solving the water source problem in the desert, it was transformed into high-quality mechanized farmland with large construction machinery.

3. Use modern planting techniques.

After the desert is transformed into farmland, modern planting technology will be adopted to intensively plant and save labor costs. At that time, the desert will no longer be the sand source of sandstorms, but the granary of Chinese children.

4. Establish a high-quality granary for the benefit of future generations.

Transforming the desert into a mechanized farm will not only benefit future generations, but also nip the sandstorm weather affecting the north in the cradle. From then on, there will be no more sandstorms in the north, and the nation will add splendid Jiangnan!

Beijing welcomes the strongest sandstorm this year. The sandstorm weather is caused by the convection between Mongolian cyclone and cold air in Inner Mongolia and Xinjiang basin, which forms a strong wind, which rolls up yellow sand from west to east and blows it to Beijing and many northern regions, forming sandstorm weather.