气候变化领域集成服务门户(CCPortal): Characterizing a landmark biomass-burning event and its implication for aging processes during long-range transport

CCPortal

DOI	10.1016/j.atmosenv.2020.117766
	Characterizing a landmark biomass-burning event and its implication for aging processes during long-range transport
	Nguyen L.S.P.; Huang H.-Y.; Lei T.L.; Bui T.T.; Wang S.-H.; Chi K.H.; Sheu G.-R.; Lee C.-T.; Ou-Yang C.-F.; Lin N.-H.
发表日期	2020
ISSN	13522310
卷号	241
英文摘要	Springtime biomass burning (BB) in peninsular Southeast Asia (PSEA) has a large impact on the downwind air quality as has been frequently observed at the Lulin Atmospheric Background Station (LABS). Numerous PSEA BB long-range transport events have been observed at LABS in the past decade, of which the biggest event (based on the carbon monoxide (CO) mixing ratio and particulate matter (PM) loading) occurred on March 18, 2009. In this study, for the first time, in-situ observations from LABS, MERRA-2 reanalysis data, and satellite data were combined to elucidate this remarkable event. This event lasted over 29 h and seriously impacted the air quality at LABS. Average concentrations (±S.D.) of CO, ozone (O3), and PM10 were 586.2 ± 164.5 ppb, 105.2 ± 23.4 ppb, and 90.4 ± 24.4 μg m−3, respectively, which were enhanced ranging from 98% to 280% over the March 2009 average. Furthermore, significant increases in toxic air pollutants (e.g., gaseous elemental mercury (GEM) and dibenzo-p-dioxin/furan) concentrations were also observed, implying a severe impact from BB smoke on ecosystems and human health. The transport pathway and BB smoke layer height were investigated with backward trajectories, daily satellite aerosol products, and lidar observations. The mean SSA440 value of 0.87 suggested that the plume contained highly adsorbing aerosols, and the high char-EC/soot-EC ratio (low-temperature elemental carbon/high-temperature elemental carbon) of 29.4 suggested predominance of BB aerosols. In addition, plume aging indicators (e.g., ΔGEM/ΔCO, ΔO3/ΔCO, char-EC/soot-EC) suggest the BB plume was only weakly aged (i.e. low air mass intermixing, low chemical transformation, low cloud interaction) and in a nearly pristine state during the whole of the long-range transport. This event study can serve as a valuable benchmark when identifying unaged BB plumes that have been transported from PSEA to LABS (>2000 km) and will be useful for characterizing PSEA BB and its impact on greater Asia environment. © 2020 Elsevier Ltd
英文关键词	Aerosol aging; Aerosol vertical distribution; Biomass burning; Long-range transport
语种	英语
scopus关键词	Aerosols; Air quality; Carbon monoxide; Indicators (chemical); Optical radar; Smoke; Temperature; Average concentration; Backward trajectory; Chemical transformations; Gaseous elemental mercury; In-situ observations; Long range transport; Toxic air pollutants; Transport pathways; Laboratories; carbon; carbon monoxide; dibenzodioxin derivative; furan; mercury; ozone; aging; air quality; biomass burning; carbon monoxide; concentration (composition); high temperature; in situ measurement; long range transport; mixing ratio; ozone; particulate matter; satellite data; toxic substance; transformation; aerosol; air pollutant; air quality; Article; biomass; combustion; concentration (parameter); low temperature; particulate matter; plume; priority journal; satellite imagery; smoke; Southeast Asia
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144964
作者单位	Department of Atmospheric Sciences, National Central University, Taoyuan, Taiwan; Center for Environmental Monitoring and Technology, National Central University, Taoyuan, Taiwan; Institute of Environmental and Occupational Health Sciences, National Yang Ming University, Taipei, 112, Taiwan; Graduate Institute of Environmental Engineering, National Central University, Taoyuan, Taiwan
推荐引用方式 GB/T 7714	Nguyen L.S.P.,Huang H.-Y.,Lei T.L.,et al. Characterizing a landmark biomass-burning event and its implication for aging processes during long-range transport[J],2020,241.
APA	Nguyen L.S.P..,Huang H.-Y..,Lei T.L..,Bui T.T..,Wang S.-H..,...&Lin N.-H..(2020).Characterizing a landmark biomass-burning event and its implication for aging processes during long-range transport.Atmospheric Environment,241.
MLA	Nguyen L.S.P.,et al."Characterizing a landmark biomass-burning event and its implication for aging processes during long-range transport".Atmospheric Environment 241(2020).