What is the ups and downs of the weather, and what harm does it have to people's health?

According to the authoritative explanation of China Meteorological Network, floating dust meteorology refers to the weather phenomenon that dust or soil particles are suspended in the atmosphere, making the horizontal visibility less than 10km. Floating dust appears when there is no wind or wind before and after the cold air passes through the border. It means that dust and fine sand float evenly in the air, mostly from dust spread by high-altitude airflow in the distance, or from unsinkable fine particles floating in the air after dust storms and sand blowing, and the vertical visibility is also poor. Particles larger than 10 micron can almost be captured by nasal cavity and throat, and it is not easy to enter alveoli. But at present, most of the air is particulate matter below 10 micron, which is the most harmful to human body. It can be directly driven into organs and tissues such as eyes, nose, throat and skin, and deposited in alveoli through respiratory tract. Once the dust particles in the lung exceed the clearance capacity of the lung itself, they will be deposited in the chest cavity, leading to lung and pleural lesions, causing bronchitis, pneumonia, emphysema and other diseases. In addition, in dusty weather, people's eyes, nose, throat, skin and other direct contact parts will be damaged to a certain extent, mainly manifested as runny nose, tears, cough, expectoration and other irritating symptoms and allergic reactions, which can lead to skin inflammation and conjunctivitis in severe cases. In dusty weather, it is necessary to minimize going out and close doors and windows at home in time, especially for patients with chronic bronchitis and the elderly and children with relatively weak resistance. If you don't pay attention to protection in windy and dusty days, the old disease will recur or cause other diseases. If you go out, it is best to use dust masks and glasses as protection, which can effectively block the stimulation of sandstorms to the respiratory tract and reduce or prevent dust from entering the respiratory tract and lung organs. When people go home, they can rinse their mouths with clear water and clean their noses to reduce the chance of infection. Because the wind is strong and the climate is dry when the dust weather occurs, it is necessary to drink more water to speed up the discharge of metabolic waste in the body and enhance the adaptability to the environment.