There is a wide range of sand and dust weather in the northern region, what is the trend of sand and

Affected by cold air and strong winds, it is expected that from 20:00 on March 15, 2021 to 20:00 on March 16, 2021, there will be sand dust or floating dust in some areas of southern Xinjiang basin and eastern Xinjiang, western Inner Mongolia, southwestern Heilongjiang, western Jilin, central and western Liaoning, northwest Qinghai, Gansu, Ningxia, central and northern Shaanxi, Shanxi, Hebei, Beijing, Tianjin, Shandong, Henan, central and northern Anhui, central and northern Jiangsu, etc.

Among them, sandstorms occurred in Hexi in Gansu, northern Ningxia, and southern basins in Xinjiang. **The Meteorological Observatory issued a blue sandstorm warning at 18:00 on the 15th.

There are sandstorms in some areas. This is also the most intense sandstorm process in China in the past 10 years, and the scope of sandstorms is also the most extensive in the past 10 years. Dust weather is a general term for a weather phenomenon in which the wind draws dust and sand particles from the ground into the air and makes the air cloudy.

Sand and dust weather is one of the major catastrophic weather affecting the northern part of our country.

According to the "Sandstorm Weather Rating", sandstorm weather is divided into five types: floating dust, blown sand, sandstorm, severe sandstorm, and very strong sandstorm. In general, there are three basic conditions required for the formation of sand and dust:

Dust sources, strong winds, and unstable atmospheric stratification. The ** of sand and dust is the material condition. Gale is the source of strength; Unstable atmospheric stratification is a thermal condition.

The distribution of dust sources in China is relatively fixed, and the "changeable" is mainly the weather conditions. Under the conditions of sand and dust sources and strong winds, whether the lower atmosphere stratification is in a "strongly unstable state" is the decisive factor for the formation of sand and dust storms. Spring is the season with the most drastic temperature and temperature changes in North China throughout the year, and afternoon is the time when daytime temperatures are highest, which is more likely to lead to instability in atmospheric stratification.

The fundamental difference between a dusty day and a pure windy day depends on the "face" of the vertical dynamics of the lower troposphere.

Northerners can clearly feel that the number of sandstorms seems to be decreasing in recent years. The same goes for the statistical results. Studies have shown that since 1961, the dust weather in China has shown a significant downward trend.

It can be seen from the annual distribution of sand and dust processes since 2000 that the trend of sand and dust has been weakening in recent years. In response to such strong winds and sandstorms, dust warnings have been issued in many places. Older people and children and people with allergic respiratory diseases should try not to spend time outdoors.

When you go out, please wear a mask, gauze and other dust-proof products, and clean your face and nose when you return. Today, the north wind is strong, the sky is dry, and the materials are dry. Please pay attention to wind and fire protection; Strengthen outdoor structures and billboards, and pay attention to the safety protection of outdoor high-altitude work.

Personally, I think that the dust weather in recent years has actually been well managed, but this year's climate is relatively extreme, so there will be such a situation.

In recent years, sandstorms have become more frequent and more violent. Because the range of human activities is too wide now, it destroys the natural harmonious rhythm in the ecological environment.

The sand and dust phenomenon in some parts of the north is gradually getting worse, because the ecological environment is so damaged that it is difficult to really restore it even if the green area is increased, but if we can continue to plant trees, the sand and dust problem will eventually be solved.

It is still very impressive, but it still needs to work hard to make its own contribution to the country's greening and environmental protection.

In recent years, the weather in Shacheng has become more and more serious. It has a certain effect on our body. It will also affect our normal travel.

The trend has decreased, and the dust weather has become less and less severe in recent years, not as serious as before, and it is still much better in comparison.

Dust weather refers to a weather phenomenon in which high winds roll dust and sand particles into the air, making the air turbid. It occurs more in spring (March to May) every year, and the formation of this phenomenon generally has three basic conditions: sand and dust source, strong wind, and unstable atmospheric stratification state.

Dust weather is caused by civil desertification, the land is dry and has no moisture, and the movement is carried out due to the action of the wind, which has a great impact on society and people's lives, and people's lives and health have been seriously threatened.

Mainly because the wind is too strong, the dust is not fixed by the trees, and the wind will form a sandstorm when the wind blows, which is also mainly because of environmental pollution and treatment problems.

The main reason for sandstorms is that there are so few oases in the desert that they can't resist it, which is why the weather is like this.

It is the wind that blows the sand into the air, forming blowing sand, and it enters other areas with the monsoon climate.

Introduction: Under the influence of cold air, sandstorms will occur in Inner Mongolia, Gansu, Ningxia, Qinghai, Xinjiang, Shaanxi, Shanxi, Hebei, Beijing and other places in China. For many northern regions, this weather may occur in March every year, but for a short time. <>

Probably in many places, the weather is getting warmer. But there are also some places that have encountered cold air again, and they have been affected by the cold air, and there have been some dust weather in these places. And there are many provinces affected, including Inner Mongolia, Gansu, Ningxia, Qinghai, Shaanxi, Shanxi, Xinjiang, Hebei, Beijing and other places.

Moreover, there may also be some rain and snow in these places, so it will have some impact on the lives of local people. Moreover, the temperature difference between day and night in these places is also a little large, so everyone must take corresponding measures to keep warm. <>

There may be some friends who have not experienced such weather, if there is a dusty day trembling after a period of air, everyone's life will be particularly affected. Especially when you go out, you will find that the wind is relatively strong, and there is some sand mixed with it. Some people may choose to ride bicycles when they go out, but if the dust is too severe, it will also affect people's going out.

There may even be some impact on local buildings, so it is important to take precautions if you encounter such a situation. <>

After the occurrence of sand and dust weather, it will not only have an impact on life, but may also have some impact on human health. Because after the occurrence of sand and dust weather, the local environment will also become particularly harsh, and may even endanger human health. Therefore, everyone must protect the environment, and there are some groups of people who may suffer from respiratory infectious diseases.

If it is said that after encountering sand and dust weather, it may also make their condition more and more serious. Therefore, everyone must reduce going out, and if you have to go out, you must wear a mask.

The places that will be involved are the Shandong region, the Shanxi region, the Beijing area, the Hebei region, the Inner Mongolia region, and these Qingzhutong areas will be affected by the sand and dust weather.

Gansu, Inner Mongolia, Ningxia, Shanxi, Shaanxi, Hebei, these places will be affected, and there will be serious sand and dust.

Specifically, it will affect Changchun, Shenyang, Henan and Hebei, as well as Shanghai, so it is best for people in these areas not to go out for the time being.

It will spread to Henan, Hebei, Beijing, Tianjin, Shanxi, Northeast China and other places.

Global warming, the impact of human activities, and the impact of natural factors.

Affected by the cold air, the strongest dust weather process this year has invaded the north.

Why is there frequent dust weather in the north this year? The reasons are as follows: 1. Global warming.

As the global climate warms, the frequency and intensity of extreme weather events are increasing. This year's winter climate in the northern region is relatively dry, with less precipitation, which provides a sufficient material basis for the occurrence of sand and dust weather. At the same time, global warming has also led to abnormal atmospheric circulation, weakening of cold air activity, and active warm and humid air flow, which provide favorable conditions for the occurrence of sand and dust weather.

2. Impacts of human activities. In recent years, the acceleration of human activities, especially the urbanization process, has reduced the vegetation coverage area of Tongbeimu forests and grasslands, and intensified land desertification, which provides more possibilities for the occurrence of sand and dust weather. In addition, over-exploitation of land resources and destruction of vegetation in some areas will also lead to the occurrence of sand and dust weather.

3. Influence of natural factors. Sand and dust weather may also be affected by natural factors, such as **, volcanic eruptions and other geological activities, causing a large amount of dust and volcanic ash and other materials, thus forming sand and dust weather.

The frequent dust weather in the north is mainly due to the combined influence of multiple factors, including natural and human stoves

Natural factors: The natural environment is the basis for the formation of sand and dust weather, including weather conditions such as strong winds and natural geographical environments such as drought and desertification. In the spring of this year, the northern part of China was affected by the La Nina climate event, which led to low humidity, abnormal atmospheric circulation, and a decrease in the circulation frequency of desert dust reduction in the hidden sedan chair, which made sandstorms occur frequently.

Human factors: Human activities are also a major factor in the frequency of sand and dust weather, and the process of urbanization, indiscriminate logging, over-cultivation of land, and the increasingly prevalent activities of modern industry, agriculture and transportation have increased the exposure of sand and soil, causing sand and dust storm pollution.

External factors: Dust weather is also affected by external factors such as meteorological conditions, such as weather circulation systems such as the East Asian summer monsoon and the Siberian high that have a direct impact on dust weather, as well as the role of systems such as the Yellow Sea cold vortex.

The combination of the above factors has led to frequent and long duration of dust weather in northern China this year. In view of this situation, measures should be taken to reduce the occurrence of sand and dust weather, such as strengthening ecological and environmental protection, promoting desertification control, and curbing overdevelopment.

In the past few years, the frequency of sand and dust weather in the northern region has increased significantly. The emergence of this phenomenon is not only related to climate change, but also affected by human activities.

Climate change is one of the main factors contributing to the frequency of dust and sand in northern China.

In recent years, the trend of global warming has been very obvious, which has led to reduced rainfall and even drought in many regions.

In such a climate, the occurrence of sand and dust weather has become more frequent.

In addition, human activities are also one of the reasons for the frequent sand and dust weather in the north.

In the past few decades, human exploitation and destruction of the natural environment have become more and more serious.

Large-scale reclamation, overgrazing, over-exploitation and other behaviors have led to desertification of land and loss of vegetation, which in turn leads to an increase in sand and dust weather.

In addition to this, there are other factors that may also contribute to the frequency of sandy and round key dust weather in the north.

For example, the increase in extreme weather events, such as heavy rain, typhoons, floods, etc., will also have an impact on the occurrence of sand and dust weather.

In conclusion, the frequency of sand and dust weather in northern China is closely related to climate change and human activities.

In order to deal with this problem, we need to take active measures, such as strengthening environmental protection, rational use of natural resources, and improving human activities, to slow down the occurrence of sand and dust weather.

Henan ushered in the largest dust weather in the north in 2023! How harmful is this dust weather? First of all, from the perspective of the overall sand and dust climate change, in fact, the sand and dust change in China has weakened a lot, at least compared with the previous day, the distribution range is much less, so it is a good thing to weaken.

It is mainly distributed in 16 provinces and municipalities such as Qinghai, Gansu, Shandong, Henan, etc., among which the central part of Inner Mongolia is the strongest. Therefore, everyone will see that Henan will usher in the largest dust weather in the north in 2023! In fact, it is just an area.

At the same time, what we need to explain here is that spring is a period of more sand and dust climate, and this year is indeed a lot in a short period of time, in terms of quantity, there have been 4 sand potato imitation weather processes, more than the same period in normal years. And the reason behind this is also very simple.

That is, there is less rainfall in the north of our country, coupled with frequent cold air activity, so when strong winds pass through the sand sources in Mongolia and western Mongolia, Gansu and other places, they will roll sand and dust into the air, and with the low air flow to the east and south, it will affect the east and south of Inner Mongolia, thus causing a sand and dust climate, which is the reason. It has nothing to do with what everyone is talking about, such as afforestation, which is the root cause.

So how harmful is the dust weather?

There are still many hazards of sand and dust, which can not only lead to environmental pollution, land degradation, production and life, traffic safety and loss of life and property, but also bring adverse effects to human health, and can even harm various organs of the body.

In addition to high winds, sandstorms can be mixed with a large amount of particulate matter, pollen, and even a large number of bacteria, which can be affected as long as they come into contact with people. The letter is rotten.

So that's why every time there is a dusty climate, everyone is called on to go out and wear masks, or go out less, so that the impact may be smaller, and that's why.

Of course, we can't completely eliminate this climatic phenomenon, after all, under the changing climate, the change of sand and dust is also happening all the time. Moreover, with the change of climate in the future, the frequency and intensity of sand and dust will also show fluctuations, and if you want to completely eliminate it, it is only possible to change the sand source area completely.