气候变化领域集成服务门户(CCPortal): Quantification and evaluation of atmospheric pollutant emissions from open biomass burning with multiple methods: A case study for the Yangtze River Delta region; China

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DOI	10.5194/acp-19-327-2019
	Quantification and evaluation of atmospheric pollutant emissions from open biomass burning with multiple methods: A case study for the Yangtze River Delta region; China
	Yang Y.; Zhao Y.
发表日期	2019
ISSN	16807316
起始页码	327
结束页码	348
卷号	19 期号:1
英文摘要	Air pollutant emissions from open biomass burning (OBB) in the Yangtze River Delta (YRD) were estimated for 2005-2015 using three (traditional bottom-up, fire radiative power (FRP), and constraining) approaches, and the differences among those methods and their sources were analyzed. The species included PM 10 , PM 2.5 , organic carbon (OC), elemental carbon (EC), CH4, non-methane volatile organic compounds (NMVOCs), CO, CO 2 , NO x , SO 2 and NH 3 . The interannual trends in emissions with FRP-based and constraining methods were similar to the fire counts in 2005-2012, while those with the traditional method were not. For most years, emissions of all species estimated with the constraining method were smaller than those with the traditional method except for NMVOCs, while they were larger than those with the FRP-based method except for EC, CH 4 and NH 3 . Such discrepancies result mainly from different masses of crop residue burned in the field (CRBF) estimated in the three methods. Chemistry transport modeling (CTM) was applied using the three OBB inventories. The simulated PM 10 concentrations with constrained emissions were closest to the available observations, implying that the constraining method provided the best emission estimates. CO emissions in the three methods were compared with other studies. Similar temporal variations were found for the constrained emissions, FRP-based emissions, GFASv1.0 and GFEDv4.1s, with the largest and the lowest emissions estimated for 2012 and 2006, respectively. The temporal variations in the emissions based on the traditional method, GFEDv3.0, and the method of Xia et al. (2016) were different. The constrained CO emissions in this study were commonly smaller than those based on the traditional bottom-up method and larger than those based on burned area or FRP in other studies. In particular, the constrained emissions were close to GFEDv4.1s that contained emissions from small fires. The contributions of OBB to two particulate pollution events in 2010 and 2012 were analyzed with the brute-force method. Attributed to varied OBB emissions and meteorology, the average contribution of OBB to PM 10 concentrations in 8-14 June 2012 was estimated at 37.6% (56.7μgmg -3 ), larger than that in 17-24 June 2010 at 21.8% (24.0μgm -3 ). Influences of diurnal curves of OBB emissions and meteorology on air pollution caused by OBB were evaluated by designing simulation scenarios, and the results suggested that air pollution caused by OBB would become heavier if the meteorological conditions were unfavorable and that more attention should be paid to the OBB control at night. Quantified with Monte Carlo simulation, the uncertainty of the traditional bottom-up inventory was smaller than that of the FRP-based one. The percentages of CRBF and emission factors were the main source of uncertainty for the two approaches. Further improvement on CTM for OBB events would help better constrain OBB emissions. © 2019 Author(s).
语种	英语
scopus关键词	annual variation; atmospheric pollution; biomass burning; bottom-up approach; concentration (composition); pollutant source; China; Yangtze Delta
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144732
作者单位	State Key Laboratory of Pollution Control and Resource Reuse and School of the Environment, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, 210023, China; Jiangsu Collab. Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Nanjing University of Information Science and Technology, Jiangsu, 210044, China
推荐引用方式 GB/T 7714	Yang Y.,Zhao Y.. Quantification and evaluation of atmospheric pollutant emissions from open biomass burning with multiple methods: A case study for the Yangtze River Delta region; China[J],2019,19(1).
APA	Yang Y.,&Zhao Y..(2019).Quantification and evaluation of atmospheric pollutant emissions from open biomass burning with multiple methods: A case study for the Yangtze River Delta region; China.Atmospheric Chemistry and Physics,19(1).
MLA	Yang Y.,et al."Quantification and evaluation of atmospheric pollutant emissions from open biomass burning with multiple methods: A case study for the Yangtze River Delta region; China".Atmospheric Chemistry and Physics 19.1(2019).