China News Service, Beijing, May 6 (Chen Hang) On the afternoon of the 6th, a windy and dusty weather arrived in the urban area of Beijing. The strong wind carried sand and dust, the sky was dim, and the air quality was seriously polluted.
The Beijing Municipal Ecological Environment Monitoring Center (hereinafter referred to as the Monitoring Center) stated that due to the strong cold cyclone, the sand source area in southern Mongolia rapidly rose on the 5th, forming a large-scale strong sandstorm weather, and the main body of sand and dust moved rapidly to the southeast, affecting In a large area of northern China, the PM10 concentration in Shaanxi, Shanxi, and northwestern Beijing-Tianjin-Hebei reached severe and severe pollution, and the hourly PM10 concentration in some cities exceeded 1000 micrograms/m3.
At 11 o'clock on the 6th, the dust front began to affect the Yanqing District in northwestern Beijing, and quickly transmitted to the southeast. The PM10 concentration of some stations in Beijing increased significantly, and the hourly PM10 concentration exceeded 500 micrograms/m3, reaching Grade 6 severity. Pollution level.
The monitoring center said that due to the large scale of the sand and dust weather, it is expected that Beijing will continue to be affected by the sand and dust weather from the afternoon to the night of the 6th, and the PM10 peak pollution level can reach severe and serious pollution.
In the latter half of the night, as the northerly wind continues, it is expected that the main body of sand and dust will gradually move out, and the air quality can be improved to good to light pollution.
According to the Meteorological Department, as of 14:00 on the 6th, most areas in Beijing had gusts of magnitude 7 or 8, and the largest gusts in mountainous areas reached magnitude 9 to 10. Sand and dust were passing through Beijing with a minimum visibility of two to five kilometers.
Currently, Beijing is in the midst of early warning signs of strong wind yellow and sand dust blue.
It is expected that the wind will weaken significantly at night on the 8th, and the windy weather process will end.
Many netizens said on social platforms: "The outside is gradually turning yellow", "The wind and sand in spring are annoying", "Beware of precautions, and safety first"....
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The Meteorological Department reminded that in the sandy weather, the elderly, children and people with respiratory allergic diseases should try not to go outdoors, wear masks and gauze and other dust-proof supplies when going out, and clean the face and nasal cavity when they return.
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