According to the wechat official account of the Ministry of ecology and environment, on April 30, 2022, China environmental monitoring station, together with the Central Meteorological Observatory, the National Joint Center for air pollution prevention and control, the northeast, South China, southwest, northwest and Yangtze River Delta regional air quality prediction and Prediction Center and Beijing ecological environment monitoring center, held a national air quality prediction conference in the first half of May 2022 (January 15).
In the first half of May, the diffusion conditions in most parts of the country were good, the air quality was mainly excellent, and mild or above pollution processes may occur in some areas. Among them, North China, East China and southwest China may have a slight O3 pollution process from March to August, and a moderate pollution process may occur locally; Affected by the dust weather process, the northwest region may have a slight pollution process of PM10 on the 6th and 9th-12th, and a moderate or above pollution process may occur locally.
Beijing Tianjin Hebei and its surrounding areas: in the first half of May, most of the air quality in the region was good, and there may be a slight pollution process locally, with PM2 as the primary pollutant 5 or O3 Among them, from January 1 to 6, light pollution may occur in the central and southern parts of Beijing, Tianjin and Hebei, western Shandong, southern Shanxi and central and Northern Henan; On July 9 and October 15, local slight pollution process may occur, and the primary pollutant is O3.
Beijing: in the first half of May, the air quality in Beijing was mainly good. Among them, light pollution may occur on March 5 and August 9. The primary pollutant is PM2 5 or O3.
Yangtze River Delta region: in the first half of May, the air quality in the south of the region is mainly good, and that in the middle and north of the region is mainly good to mild pollution. Local moderate pollution process may occur, and the primary pollutant is O3 Among them, moderate pollution may occur locally from January to June; On July 7-8, the northern part of the region was dominated by good and the central and southern part was dominated by good to mild pollution; From September 9 to 14, most of the region was dominated by good, and local slight pollution may occur.
Jiangsu Anhui Luyu region: in the first half of May, most of the air quality in the region is dominated by good to mild pollution, and there may be a moderate pollution process locally, and the primary pollutant is O3 Among them, moderate pollution may occur locally from January to June; From September 9 to 11, most of the region was dominated by good.
Fenwei plain: in the first half of May, the air quality is mainly good to mild pollution, and the primary pollutant is PM10 or O3 From September 9 to 12, affected by the sand and dust weather process, light pollution process may occur in most areas and moderate pollution process may occur locally.
Northeast region: in the first half of May, most of the air quality in the region was excellent. Among them, from March 3 to 5, most of eastern Inner Mongolia and Liaoning were dominated by good to light pollution, and the Central Jilin was dominated by good to light pollution on May 5; From September 9 to 10, most of eastern Inner Mongolia and Liaoning were dominated by good to mild pollution. The primary pollutant is PM2 5. O3 or PM10.
South China: in the first half of May, most of the air quality in the region was excellent. Among them, on March 3-4, the middle and eastern part of Hubei was dominated by good to mild pollution; On May 7, most of Guangxi, the Pearl River Delta and central and Northern Hunan were dominated by good to mild pollution; On August 8-9, the Pearl River Delta and central and Northern Hunan were dominated by good to mild pollution. The primary pollutant is O3.
Southwest region: in the first half of May, most of the region is dominated by excellent, and local light to moderate pollution process may occur, and the primary pollutant is O3 Among them, from March to August, Chengdu Chongqing urban agglomeration and Guizhou may have a slight ozone pollution process, and some cities may have a moderate ozone pollution process; From November 11 to 13, a slight ozone pollution process may occur locally in Chengdu Chongqing urban agglomeration, and a moderate pollution process may occur in some cities.
Northwest Region: in the first half of May, most of the air quality in the region is dominated by good to mild pollution. Due to the impact of sand and dust weather process, moderate to severe pollution process may occur locally, and the primary pollutant is PM10 or O3 Among them, from January to April, most of the region is dominated by good, the eastern region may have a mild pollution process on the 4th, and the southern Xinjiang region may have a moderate or above pollution process; On the 5th, the northern part of the region was dominated by light pollution, and the southern part was dominated by good pollution. Local light pollution may occur; On June 6-8, most of the area was dominated by good, and local slight pollution may occur; From September 9 to 12, most of the area is dominated by light to moderate pollution, and severe and above pollution may occur in some periods; From the 13th to 14th, most of the region is dominated by good, and there may be a slight pollution process locally, and a moderate or above pollution process may occur in southern Xinjiang.
