Dust storms subside in the evening
Wind and dust weather hit northern China, with PM10 concentrations reaching thousands of micrograms per cubic meter and the hourly air quality index “extraordinary” in many places.
Today is the first sandstorm in Beijing in nearly 6 years! Beijing has a maximum of 12 Dust Days in March
According to the statistics of Beijing Meteorological Observatory, the annual average (1981-2010 average, the same below) of the observatory in March is 2.4 days, the most is 12 days (1954), the most is 9 days since 2000, appeared in 2001. The last sandstorm occurred on April 15, 2015. On March 18, 2020, there was sand blowing weather.
Up to strong sandstorm level! The sandstorms are the strongest in a decade
The China Meteorological Administration today held a press conference on the sandstorm weather in northern China. Beiqing – Beijing Toutiao reporter learned from the press conference that the sandstorm was the strongest in nearly a decade. According to the China Meteorological Administration, director of the center for environmental meteorological Zhang Bihui introduction, from the dust weather has happened, the dust weather influence range is very large, including dust, dust storms, has affected the northwest and north China area in our country, so from the strength point of view, this process is nearly a decade since our judgement is the strongest sandstorm weather process, at present, has reached the level of strong sandstorm weather process.
Why do today’s sandstorms come from? Here comes the official answer
The China Meteorological Administration today held a press conference on the sandstorm weather in northern China. Beiqing – Beijing Toutiao reporter learned from the press conference that there are two main causes of the dust weather. According to Zhang Bihui, director of the Environmental Meteorology Center of China Meteorological Administration, first of all, on the ground, the temperature in the whole country, including the northwest of China, is significantly higher, generally 5-8℃ higher, and most areas in Outer Mongolia have few precipitation recently, the surface conditions are very conducive to the occurrence of dust weather; Second, under the influence of relatively strong Mongolian cyclone, gust weather of 6 to 8 magnitude appeared successively from northern Xinjiang to the central and western parts of Gansu and most of Inner Mongolia, including the northern part of North China, which provided good thermal and dynamic conditions for the occurrence of dust weather.
Dust storm in the evening to reduce visibility at night to better southerly wind may cause dust weather “backflow” on 16th
It is expected that under the influence of strong cold air, there will be 4 or 5 northerly winds and gusts of 7 or 8 in the daytime. The sandstorm weather will last until this afternoon, and gradually weaken in the evening. The wind will decrease at night and the visibility will be better. On 16th, under the influence of southerly wind, dust backflow may occur, and PM10 concentration temporarily increases.
How to protect against sandstorm weather? Experts offer three suggestions
The China Meteorological Administration today held a press conference on the sandstorm weather in northern China. For the impact of sandstorm weather, according to China Meteorological Administration Environmental Meteorology Center Director Zhang Bihui, first, the dust particles will cause a relatively large impact on visibility; Second, dust particles have a certain impact on human health; In addition, dust weather caused by low visibility on the traffic has a relatively large impact. Encounter this relatively strong sandstorm weather, experts advise the public to avoid outdoor activities as far as possible, if must outdoor activities, one should pay attention to health protection, the second because sandstorm weather is often accompanied by strong wind weather, so pay attention to the wind weather may bring some impact of falling objects; Third, we should pay attention to the adverse impact of low visibility weather on traffic travel.