DOI: 10.1016/j.atmosenv.2015.04.043
Scopus记录号: 2-s2.0-84929464125
论文题名: Transport, biomass burning, and in-situ formation contribute to fine particle concentrations at a remote site near Grand Teton National Park
作者: Schurman M ; I ; , Lee T ; , Desyaterik Y ; , Schichtel B ; A ; , Kreidenweis S ; M ; , Collett J ; L ; , Jr
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 112 起始页码: 257
结束页码: 268
语种: 英语
英文关键词: Aerosol mass spectrometer
; Background
; Biomass burning
; Organic aerosol
; Organic nitrogen
; Positive matrix factorization
; Secondary organic aerosol
; Source apportionment
Scopus关键词: Aerosols
; Biomass
; Ecology
; Ecosystems
; Factorization
; Mass spectrometers
; Nitrates
; Nitrogen
; Particle size
; Spectrometers
; Sulfur compounds
; Urban growth
; Aerosol mass spectrometers
; Background
; Biomass-burning
; Organic aerosol
; Organic nitrogen
; Positive Matrix Factorization
; Secondary organic aerosols
; Source apportionment
; Matrix algebra
; ammonia
; ammonium nitrate
; ammonium sulfate
; nitrate
; organic carbon
; organic matter
; organic nitrate
; organic nitrogen
; sulfate
; atmospheric plume
; biomass burning
; chemical composition
; concentration (composition)
; ecosystem health
; in situ test
; MODIS
; national park
; oxidation
; particle size
; particulate matter
; photochemistry
; pollutant source
; pollutant transport
; spatiotemporal analysis
; time series
; visibility
; Article
; biomass
; biomass burning
; biotechnological procedures
; national park
; nitrogen deposition
; particle size
; photooxidation
; plume
; priority journal
; secondary organic aerosol
; Boise
; Grand Teton National Park
; Idaho
; Snake Basin
; United States
; Utah
; Wyoming
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Ecosystem health and visibility degradation due to fine-mode atmospheric particles have been documented in remote areas and motivate particle characterization that can inform mitigation strategies. This study explores submicron (PM1) particle size, composition, and source apportionment at Grand Teton National Park using High-Resolution Time-of-Flight Aerosol Mass Spectrometer data with Positive Matrix Factorization and MODIS fire information. Particulate mass averages 2.08μg/m3(max=21.91μg/m3) of which 75.0% is organic; PMF-derived Low-Volatility Oxygenated Organic Aerosol (LV-OOA) averages 61.1% of PM1(or 1.05μg/m3), with sporadic but higher-concentration biomass burning (BBOA) events contributing another 13.9%. Sulfate (12.5%), ammonium (8.7%), and nitrate (3.8%) are generally low in mass. Ammonium and sulfate have correlated time-series and association with transport from northern Utah and the Snake River Valley. A regionally disperse and/or in situ photochemical LV-OOA source is suggested by 1) afternoon concentration enhancement not correlated with upslope winds, anthropogenic NOx, or ammonium sulfate, 2) smaller particle size, higher polydispersity, and lower levels of oxidation during the day and in comparison to a biomass burning plume inferred to have traveled ~480km, and 3) lower degree of oxidation than is usually observed in transported urban plumes and alpine sites with transported anthropogenic OA. CHN fragment spectra suggest organic nitrogen in the form of nitriles and/or pyridines during the day, with the addition of amine fragments at night. Fires near Boise, ID may be the source of a high-concentration biomass-burning event on August 15-16, 2011 associated with SW winds (upslope from the Snake River Valley) and increased sulfate, ammonium, nitrate, and CHN and CHON fragments (nominally, amines and organonitrates). Comparison to limited historical data suggests that the amounts and sources of organics and inorganics presented here typify summer conditions in this area. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81709
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; National Park Service/CIRA, Colorado State University, Fort Collins, CO, United States; Department of Environmental Science, Hankuk University of Foreign Studies, Seoul, South Korea; Division of Environment, Hong Kong University of Science and Technology, Clearwater Bay Rd., Sai Kung, NT, Hong Kong
Recommended Citation:
Schurman M,I,, Lee T,et al. Transport, biomass burning, and in-situ formation contribute to fine particle concentrations at a remote site near Grand Teton National Park[J]. Atmospheric Environment,2015-01-01,112