Simulating the transport and chemical evolution of biomass burning pollutants originating from Southeast Asia during 7-SEAS/2010 Dongsha experiment

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Title:	Simulating the transport and chemical evolution of biomass burning pollutants originating from Southeast Asia during 7-SEAS/2010 Dongsha experiment
Authors:	李崇德;Chuang, Ming-Tung;Fu, Joshua S.;Lin, Neng-Huei;Lee, Chung-Te;Gao, Yang;Wang, Sheng-Hsiang;Sheu, Guey-Rong;Hsiao, Ta-Chih;Wang, Jia-Lin;Yen, Ming-Cheng;Lin, Tang-Huang;Thongboonchoo, Narisara;Chen, Wei-Chen
Contributors:	環境監測技術聯合中心
Keywords:	2010 Dongsha experiment;aerosols;ammonia;atmospheric chemistry;biomass;Biomass burning;burning;carbon;Chemical evolution;China;fires;Indochina;latitude;nitrates;nitric acid;nitrogen;nitrogen content;nitrogen oxides;organic matter;particulates;pollutants;Simulation;South East Asia;sulfates;sulfur dioxide;Transport
Date:	2015-07-01
Issue Date:	2026-04-23 15:08:38 (UTC+8)
Publisher:	Elsevier Ltd.;Elsevier Ltd
Abstract:	摘要： This study aimed to simulate the transport of biomass burning (BB) aerosol originating from Southeast Asia (SEA) during the Dongsha Experiment conducted from March 2010 to April 2010. Transport pathways were reanalyzed and steering flow in the mid-latitude areas and anticyclones in low-latitude areas were found to control the transport of BB plume after it was injected to a high atmosphere. For the 12 simulated and observed events at Mt. Lulin (2862 m MSL; 23°28′07″ N, 120°52′25″ E), the 72 h backward trajectories were all tracked back to southern China and northern Indochina, which were the locations of the largest BB fire activities in SEA. Chemical evolutions of BB pollutants along the moving trajectories showed that organic matter was always the dominant component in PM2.5, consistent with the observations at both near-source regions and Mt. Lulin. For nitrogen species, nearly all NOx molecules oxidized into HNO3, NO3−, PAN, and PANX in fires or near fires. The synchronic consumption of NOx, SO2, and NH3 explained the production of the major components of inorganic salts. In the moving BB plume, sulfate concentration increased with decreased nitrate concentration. Ratios of ammonium to PM2.5 and elemental carbon to PM2.5 remained nearly constant because additional sources were lacking. •Reanalysis of transport of biomass burning plume originating from SEA.•Chemical evolution of biomass burning pollutants during long-range transport.•Combine WRF/HYSPLIT/CMAQ to analyze the compositions of biomass burning plume. 出版者： Elsevier Ltd 出版日期： 2015-07 出處： Atmospheric environment (1994), 2015-07, Vol.112, p.294-305 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2015 Elsevier Ltd 識別號： ISSN: 1352-2310 識別號： EISSN: 1873-2844 識別號： DOI: 10.1016/j.atmosenv.2015.04.055
Appears in Collections:	[Center for Environmental Monitoring and Technology] journal & Dissertation

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