Henan will usher in dusty weather. What should I pay attention to when traveling in dusty weather?

? Meteorologists reminded that people should pay attention to five points when traveling in dusty weather. First of all, pay attention to walking and cycling, and take less narrow passages between tall buildings. Because it will form a narrow channel? Narrow tube effect? The wind in the passage will increase, which will bring certain danger to pedestrians driving in it. Second, be careful not to stay in billboards and old trees for a long time. Some billboards may collapse under the strong wind because they are not installed firmly; However, some old trees are dead, their foundations are not firm, and they are easy to break when it is windy, which is dangerous to pedestrians. Third, pay attention to the safety of light vehicles. Because of its light weight, light vehicles may be blown by strong winds when driving at high speed. So leave something heavy or drive slowly. Fourth, we should pay attention to riding less bicycles. Because in windy weather, downwind or headwind will not cause too much danger to riding, but once riding in crosswind, it is likely to be blown down by strong wind, causing physical injury. Fifth, we should pay attention to carrying masks, scarves and other dust-proof products to avoid dust damage to the eyes and respiratory system.

? Dust weather is a disastrous weather phenomenon in northern China (especially in northwest China) in spring. This kind of weather can be divided into three levels according to horizontal visibility: floating dust, sand blowing and sandstorm. Due to the suspended dust in the atmosphere, the horizontal visibility of the atmosphere is less than 10 km. Sand blowing wind rolls up sand or dust on the ground, making the air quite turbid, and the horizontal visibility is 1- 10 km. The strong wind of sandstorm blows up the dust on the ground, which makes the air very turbid and the horizontal visibility is less than 1 km. When the horizontal visibility is less than 500 meters, it is a strong sandstorm. Dust weather will have the following adverse effects on human activities: the environment is polluted, dust wrapped by strong winds is everywhere, and the passing air is turbid, stuffy nose and squinting, which can make the incidence of respiratory diseases soar.

? Hidden danger: The dusty weather carries a lot of dust to block the sun, and the weather is gloomy, which leads to the reduction of solar radiation, and the low visibility can last for several hours to more than ten hours. The dark sky makes people feel dull and reduces the efficiency of work and study. In addition, the dusty weather has a great impact on traffic safety, and the low visibility leads to frequent traffic accidents, which leads to the closure of expressway and the inability of aircraft to take off and land normally. In severe cases, the glass of cars and train carriages may be damaged, or even stopped or derailed.

In order to prevent the harm caused by dusty weather, people should take the following measures: 1) Avoid staying under billboards and ancient trees. Under the strong wind, poorly installed billboards or unstable old trees are easy to collapse or break, endangering the lives of pedestrians. 2) Close the doors and windows in time to reduce going out, especially for the elderly and children. People who have to go out should wear masks or protect their eyes, mouth and nose with wet towels and scarves to effectively reduce dust inhalation. Wash your hands and face carefully before eating.