Xinhua News Agency, Beijing, March 15 (Reporters Xia Ke and Tian Chenxu) Starting at 7:25 on the 15th, Beijing has issued an escalated yellow warning signal for sand and dust storms. The city is in strong wind blue, sand and dust yellow warning, visibility is less than 1 km, PM10 The concentration increased significantly.
Experts said that Beijing has now entered the pollen season, and the sandy weather is superimposed. The elderly, children, and people with respiratory allergic diseases should try not to go outdoors.
Wear masks, gauze, goggles and other dust-proof supplies when you go out, and clean your face, nasal cavity and outer clothing when you return.
According to the content jointly released by the Beijing Meteorological Bureau and Beijing Tongren Hospital, the temperature in February this year was higher than usual, and even the highest temperature broke the historical extreme.
Affected by this, the phenological period of many flowers and trees has advanced, and the pollen period of Cypress in the main urban area of Beijing has arrived earlier.
Duan Su, deputy director of the Department of Rhinal Allergy, Beijing Tongren Hospital, said that people who are prone to allergies should try to avoid going out during the pollen season from 10 am to 5 pm every day when the pollen concentration is high.
It is best to wear a mask when you go out, use lenses instead of contact lenses, or wear sunglasses; if you come into contact with a lot of allergens outside, you can clean your nasal cavity after going home.
According to the monitoring data of the Beijing Ecological Environment Monitoring Center that day, the PM10 concentration in most areas exceeded 2000 micrograms/m3, and the Haidian Sijiqing Station reached 3572 micrograms/m3.
Visibility is 300 to 800 meters in most areas.
Duan Su said that in the past one or two weeks, Beijing has experienced continuous smog and dust storms on the 15th. It is recommended that patients suffering from allergies, asthma and other respiratory diseases should avoid going out.
Cao Ling, chief physician of the Department of Respiratory Medicine at the Capital Institute of Pediatrics, said that children’s resistance is low and the respiratory mucosa is more fragile. They should stay indoors as much as possible, avoid outdoor sports, and wear a mask if they go out.
Doors and windows should be closed indoors to reduce ventilation, and the air purifier should be turned on to filter the sand and dust in the air; if there is no air purifier, try to use a wet towel to block the gaps between the doors and windows to prevent sand and dust from entering the room.