Study On The UV-vis Spectroscopy Remote Sensing Technique Of The Emission Of Pollutant Gas Oriented Verification Of Emission Inventory

With the accelerating process of urbanization,industrialization and regional economic integration in China,atmospheric pollution is gradually changing from local to single urban air pollution to regional complex air pollution.Regional atmospheric composite pollution is a new type of air pollution problem that has emerged in China in recent years.The list of regional air emission sources is the key of input data that can identify regional sources of air pollutants,use air quality models to study regional air pollution formation mechanisms,warn and forecast pollution processes and formulate pollution control strategies.However,current related technologies and methods are relatively weak,the lack of real-time updated high-temporal-resolution air pollutant emission source list is one of the key bottlenecks that conducting regional air pollution research,air quality early warning,forecasting and pollution control in China.In this paper,we aim at the question of real-time acquisition of high-temporal-resolution source emission inventory in identifying the sources of regional air pollutants,using air quality models to study regional air pollution formation mechanisms,early warning and prediction of pollution processes,formulating pollution control strategies,develop the method of atmospheric pollution source grid emission inventory based on passive optical telemetry technology.We carry out a vehicle-based dual-optical path DOAS system suitable for on-board observation platforms,based on the study of rapid acquisiting vertical contaminant concentration of vehicle-borne optical telemetry,wind confined model carlo montecarlo spatial condition simulation reconstruction column concentration area distribution reconstruction algorithm and quantitative evaluation reconstruction uncertainty,coupled vertical field concentration distribution data with wind field data to obtain emissions.By constructing a pollutant diffusion numerical model,the pollutant concentration reconstruction algorithm and uncertainty are verified,the emission inventory acquisition algorithm based on telemetry data is verified.Through field observation experiments with different scales and emission characteristics,compare the emission inventory with existing emission monitoring sources and known emission inventory areas,eventually,a three-dimensional distribution and emission flux telemetry method for polluting gases oriented to source inventory verification was finally establislhed.On this basis,conduct regional observations of polluted gas(eg,NO2,SO2 and HCHO,etc)emissions in typical regions(eg,industrial areas,urban areas,etc.),evaluate the characteristics of pollutant distribution,changes in pollution source emissions and the effects of external transport,etc.The identification of sources of pollutant emissions and the accurate quantitative characterization of their emission sources are the basic starting points for comprehensive prevention and control of atmospheric pollution,and it is also the ultimate goal to evaluate the effectiveness of pollution control strategies.The results of this study not only provide a method for acquisition and calibration of vehicle-based optical telemetry for regional emission inventory,make up for the current shortage of checklists for pollution sources,at the same time,it can also provide basic scientific data for the study of analysis pollutant source analysis and air quality early warning,prediction model.