Data quality evaluation and calibration of on-road remote sensing systems based on exhaust plumes

作     者：Shijie Liu Xinlu Zhang Linlin Ma Liqiang He Shaojun Zhang Miaomiao Cheng Shijie Liu;Xinlu Zhang;Linlin Ma;Liqiang He;Shaojun Zhang;Miaomiao Cheng

作者机构：State Key Laboratory of Environmental Criteria and Risk AssessmentChinese Research Academy of Environmental SciencesBeijing 100012China Institute of Atmospheric EnvironmentChinese Research Academy of Environmental SciencesBeijing 100012China School of EnvironmentState Key Joint Laboratory of Environment Simulation and Pollution ControlTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution ComplexBeijing 100084China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2023年第123卷第1期

页      面：317-326页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 0713[理学-生态学] 

基　　金：supported by National Key R&D Program of China(Nos.2019YFC0214800 and 2017YFC0212100) Beijing Municipal Science&Technology Commission(No.Z181100005418015) 

主　　题：On-road remote sensing(RS) Data quality Spearman rank correlation Least-square regression with a non-zero intercept Cook value 

摘      要：In recent years,with rapid increases in the number of vehicles in China,the contribution of vehicle exhaust emissions to air pollution has become increasingly *** achieve the precise control of emissions,on-road remote sensing(RS)technology has been developed and applied for law enforcement and ***,data quality is still an existing issue affecting the development and application of *** this study,the RS data from a cross-road RS system used at a single site(from 2012 to 2015)were collected,the data screening process was reviewed,the issues with data quality were summarized,a new method of data screening and calibration was proposed,and the effectiveness of the improved data quality control methods was finally *** results showed that this method reduces the skewness and kurtosis of the data distribution by up to nearly 67%,which restores the actual characteristics of exhaust diffusion and is conducive to the identification of actual clean and high-emission *** annual variability of emission factors of nitric oxide decreases by 60%-on average-eliminating the annual drift of fleet emissions and improving data reliability.