| With the rapid economic development in recent years,air pollution has become increasingly prominent,and the systematic monitoring of air pollution has become one of the research focuses.Stereoscopic mobile observation system has become an important tool for atmospheric environment monitoring due to its high efficiency and flexibility.The application of vehicle-mounted stereoscopic mobile observation system in atmospheric environment monitoring was mainly studied in this thesis.The overall structure of the mobile observation system was firstly studied,and then the working principle of the main equipment on board was analyzed in the thesis.Data collection,display,analysis and storage were realized based on vehicle data display platform.Two application examples of mobile observation system were given in the thesis.With the data of the automatic air monitoring station and the observation results of the vehicle-mounted lidar,the process of pollution transportation and the causes of the pollution process in Shijiazhuang were studied.The meteorological conditions were analyzed by combining the wind rose chart and superimposing the particulate matter concentration,while the influence of the second conversion process was analyzed by using MAX-DOAS observation and relative humidity observation equipment.The boundary layer height and inverse temperature were obtained by using lidar and microware radiometer for analysis on pollution diffusion conditions,and the source of pollution transportation was analyzed by backward trajectory.For the unreasonable locations of the existing ambient air monitoring stations,the optimization of air quality monitoring distribution was carried out by using the principal component analysis.The comprehensive evaluation index of optimization of the regional air quality monitoring network in Anhui Province was established.First,the spatial distribution of atmospheric pollutants in each district and county of Anhui Province was obtained by interpolating through Arcgis software.Then the pollution transmission channel of the typical heavy pollution process was analyzed.Cruise observations was carried out by using the stereoscopic mobile observation system,which supported the transmission channels.Finally,method of principal component analysis was carried out for on 56 indexes in 101 counties and in cities Anhui Province.The result shows that the seven main components including PM2.5,O3,industrial sources,volatile organic compounds,population,GDP and construction industry are important factors that determine the optimization of the location of the regional air quality monitoring network in Anhui Province. |
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