4hw.org: in recent years, there are more and more haze weather, people pay more and more attention to haze. Winter is the high incidence period of haze, and haze is rampant in all corners of the city. Do you know how haze is formed? How to prevent haze in winter? Let's have a look!
How is haze formed
Haze is also known as haze (haze). Particles such as dust, sulfuric acid, nitric acid and organic hydrocarbon in the air can also make the atmosphere turbid, the field of vision blurred and the visibility worsened. If the horizontal visibility is less than 10000 meters, the visual obstacles caused by the aerosol system composed of non-aqueous substances are called haze or dust haze. Hong Kong Observatory calls haze Haze is also known as atmospheric brown cloud. In the ground meteorological observation specification of China Meteorological Administration, haze weather is defined as: 'a large number of extremely fine dry dust particles float evenly in the air, making the air with horizontal visibility less than 10km generally turbid, making the bright objects in the distance slightly yellow and red, and the dark objects slightly blue. According to the research, there are four areas with severe haze in China at present: Huang Huai Hai area, Yangtze River Valley, Sichuan Basin and Pearl River Delta.
There are several reasons for the formation of haze.
1. The main factors when the air pressure is low and the air does not flow. Because the air is not flowing, the tiny particles in the air gather and float in the air.
2. The ground is dusty and the air humidity is low. People and vehicles on the ground agitate the dust.
3. Automobile exhaust is the main pollutant emission. In recent years, there are more and more automobiles in the city. Automobile exhaust is a factor of haze.
4. Secondary pollution produced by the factory.
5. CO2 and other pollutants emitted by heating in winter.
How to prevent haze in winter
1. Try to avoid going out and wear masks when going out
This is the most basic common sense. Pay more attention to the weather and try not to go out in case of haze. Working people should prepare masks at home. Wearing masks to go out is necessary for haze weather, which can effectively filter harmful pollutants to a certain extent.
2. Try not to open windows at home
In addition to try not to go out, but also to resist external haze pollutants, not to let them into the home. At this time, the habit of opening windows every day will be a little slower. It's better to wait for the haze to dissipate and open the window after the sun comes out.
3. Prepare more masks and wash them once
In this way, it can reduce the haze damage more effectively. The mask shall be cleaned as soon as possible, and the next day it shall be used for standby. Otherwise, the pollutants left on the mask are likely to cause secondary pollution.
4. Wash your face, rinse your mouth and clean your nose when you go home
Cleaning is very important. Although we put on masks and even headscarves, the dust is everywhere in the air, which can't be completely isolated. Face, arms and other body parts are exposed outside for a long time, so it's a good habit to wash your face, rinse your mouth and clean your nose when you go home.
5. Try to avoid outdoor sports
This is especially important for the elderly who love sports, especially morning exercises. If there is a haze, don't try to go out for morning exercises. Haze is very easy to stimulate the respiratory tract, which will cause some serious infections, so it's best to wait for the haze to go away for a few days before resuming your exercise plan.
6. Eat light food and more fruits and vegetables
Try to avoid the over stimulation of heavy taste, fried and spicy food, eat more fruits and vegetables, supplement more vitamins, and some foods to clear the lungs and moisten the throat, which can well alleviate the impact of haze, and drink more water can well alleviate the harm of haze weather to the body.