The quantification of NOx and SO2 point source emission flux errors of mobile differential optical absorption spectroscopy on the basis of the Gaussian dispersion model: a simulation study

doi:10.5194/amt-13-6025-2020

	The quantification of NOx and SO2 point source emission flux errors of mobile differential optical absorption spectroscopy on the basis of the Gaussian dispersion model: a simulation study
	Huang, Yeyuan 1,6; Li, Ang 1; Wagner, Thomas 5; Wang, Yang 5; Hu, Zhaokun 1; Xie, Pinhua 1,4,6; Xu, Jin 1; Ren, Hongmei 1,6; Remmers, Julia 5; Fang, Xiaoyi 2
刊名	ATMOSPHERIC MEASUREMENT TECHNIQUES
	2020-11-11
卷号	13
ISSN号	1867-1381
DOI	10.5194/amt-13-6025-2020
通讯作者	Li, Ang(angli@aiofm.ac.cn) ; Wang, Yang(y.wang@mpic.de) ; Xie, Pinhua(phxie@aiofm.ac.cn)
英文摘要	Mobile differential optical absorption spectroscopy (mobile DOAS) has become an important tool for the quantification of emission sources, including point sources (e.g., individual power plants) and area emitters (e.g., entire cities). In this study, we focused on the error budget of mobile DOAS measurements from point sources, and we also offered recommendations for the optimum settings of such measurements via a simulation with a modified Gaussian plume model. Following the analysis, we conclude that (1) the proper sampling resolution should be between 5 and 50 m. (2) When measuring far from the source, undetectable flux (measured slant column densities (SCDs) are under the detection limit) resulting from wind dispersion is the main error source. The threshold for the undetectable flux can be lowered by larger integration time. When measuring close to the source, low sampling frequency results in large errors, and wind field uncertainty becomes the main error source of SO2 flux (for NOx this error also increases, but other error sources dominate). More measurement times can lower the flux error that results from wind field uncertainty. The proper wind speed for mobile DOAS measurements is between 1 and 4m s(-1). (3) The remaining errors by [NOx] / [NO2] ratio correction can be significant when measuring very close. To minimize the [NOx] / [NO2] ratio correction error, we recommend minimum distances from the source, at which 5 % of the NO2 maximum reaction rate is reached and thus NOx steady state can be assumed. (4) Our study suggests that emission rates < 30 g s(-1) for NOx and < 50 g s(-1) for SO2 are not recommended for mobile DOAS measurements. Based on the model simulations, our study indicates that mobile DOAS measurements are a very well-suited tool to quantify point source emissions. The results of our sensitivity studies are important to make optimum use of such measurements.
资助项目	National Natural Science Foundation of China[41775029] ; National Natural Science Foundation of China[91644110] ; National Natural Science Foundation of China[41530644] ; National Key Research and Development Project of China[2018YFC0213201] ; National Key Research and Development Project of China[2017YFC0209902] ; Science and Technology Commission Shanghai Municipality Research Project[17DZ1203102]
WOS关键词	MAX-DOAS OBSERVATIONS ; CROSS-SECTION ; VOLCANO ; PLUME ; VALIDATION ; COLUMNS ; GAMES ; HCHO
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000592420300002
资助机构	National Natural Science Foundation of China ; National Key Research and Development Project of China ; Science and Technology Commission Shanghai Municipality Research Project
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/105466]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Ang; Wang, Yang; Xie, Pinhua
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China 3.Beijing Municipal Climate Ctr, Beijing 100089, Peoples R China 4.Chinese Acad Sci, CAS Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361000, Peoples R China 5.Max Planck Inst Chem, Mainz, Germany 6.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yeyuan,Li, Ang,Wagner, Thomas,et al. The quantification of NOx and SO2 point source emission flux errors of mobile differential optical absorption spectroscopy on the basis of the Gaussian dispersion model: a simulation study[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2020,13.
APA	Huang, Yeyuan.,Li, Ang.,Wagner, Thomas.,Wang, Yang.,Hu, Zhaokun.,...&Dang, Bing.(2020).The quantification of NOx and SO2 point source emission flux errors of mobile differential optical absorption spectroscopy on the basis of the Gaussian dispersion model: a simulation study.ATMOSPHERIC MEASUREMENT TECHNIQUES,13.
MLA	Huang, Yeyuan,et al."The quantification of NOx and SO2 point source emission flux errors of mobile differential optical absorption spectroscopy on the basis of the Gaussian dispersion model: a simulation study".ATMOSPHERIC MEASUREMENT TECHNIQUES 13(2020).