Exploring the air pollution monitoring station, high-precision instruments do 'physical examination' for the air

Lidar 'scans' the time and space distribution of pollution, the particle size spectrometer measures the particle size and concentration of fine air particles, and the atmospheric stability monitor monitors whether the atmosphere is stable... Various indexes of atmospheric conditions are presented through these sophisticated instruments It has become an important component of atmospheric monitoring. On November 9th, in order to further improve the transparency of environmental protection work and enhance public awareness of environmental protection, the Chengdu Environmental Protection Bureau launched the environmental protection open day in the fourth quarter of this year. High-precision instruments do 'physical examination' for the air. 　　' Chengdu currently has 42 monitoring points for ambient air quality, including 8 control points in China, 18 provincial control points (including 3 rural points), and 15 city control points. 1 national greenhouse gas monitoring station. 54 dust fall monitoring points and 15 sulfation rate points. In the central city, there are Liangjiaxiang, Shilidian, Shahepu, Sanwayao, Junping Street, Dashi West Road, Lingyan There are 8 monitoring points in the Temple and Jinquan Rivers.' Jia Fengju, a staff member of the Super Station, introduced and led everyone into the laboratory with a sophisticated 'brain'. Lidars, particle size spectrometers, atmospheric stability monitors, turbidity meters and other instruments that are rarely seen at ordinary times have appeared one by one. 'Through the data analysis graph of lidar, we can know the temporal and spatial distribution of air pollution at a glance, where the pollution situation is around this monitoring point and during which time period, so as to judge the air quality in the area. '　　 Jia Fengju said that before, they had to report the air quality to the monitoring center at two points in the morning and noon every day. In recent times, this frequency has increased to three times a day. These data are an important basis for judging whether we should take emergency response to heavy pollution weather and which level of emergency we should take. In the next step, the super station will also introduce newer and more accurate measuring instruments. At the same time, it will also establish 4-6 border stations in the three-ringed area, and introduce laser radar and other instruments to strengthen air quality monitoring in suburbs (cities) and counties.　　Citizens praise the air monitoring work　　Air quality monitoring is an important part of the air pollution prevention and control work. The Open Day activities also entered the Municipal Environmental Monitoring Center, allowing everyone to experience the monitoring work online at the emergency command center.　　 'Surrounding air conditionUnder the demonstration of the staff of the Municipal Environmental Information Protection Center, the large screen of the emergency command center showed various data such as atmospheric conditions and water environment conditions in different sections. The overall environmental quality of Chengdu can be seen here. Citizen representatives at the scene expressed that with such comprehensive monitoring work as a guarantee, it is believed that the environmental quality of Chengdu will continue to improve. 'I also participated in the previous Open Day activities. Today I visited the super station and the emergency command center, which really made my eyes shine. I just realized that our facilities and equipment are very advanced and advanced.' said Liu Bingheng, a citizen representative. In his view, air monitoring is very important, it can help to study and judge the form of air pollution, and lay the foundation for the next step of prevention and control measures.