Exploring the Source of Particulate Matter in Agricultural Cities in Northwest China Based on Lidar
In order to scientifically control air pollution in agricultural cities in northwest China,it is necessary to explore the source of pollution.The high-altitude floating dust event in Wuwei City on September 4,2021 was selected,using the results of particulate matter lidar monitoring combined with the ground particulate matter concentration values,it was found that when the high-altitude floating dust settled to the ground,the ground particulate matter concentration significantly increased,and the air quality level changed from good to mild pollution.Using the lidar navigation and fixed-point scanning to monitor the pollution distribution in Wuwei City from January 25 to 26,2022,it was found that rural residents around the urban area of Wuwei City had significant emissions from scattered burning pollution,especially at night.In order to accurately identify the source of pollution,through studying the two typical pollution processes of natural and human factors,it was found that the air pollution control can not only relied on the ground observation station monitoring data,but also needed to combine the detection results of lidar.For agricultural cities in the northwest of China,air pollution control should pay attention to the local pollution generation and the increase of particulate matter concentration caused by dust input.
air pollutionlidarfloating dustnavigation monitoringplanetary boundary layer(PBL)
NETL
NSTL
万方数据
