DOI: 10.1016/j.atmosenv.2015.01.060
Scopus记录号: 2-s2.0-84921986209
论文题名: Long-term measurements of submicrometer aerosol chemistry at the Southern Great Plains (SGP) using an Aerosol Chemical Speciation Monitor (ACSM)
作者: Parworth C ; , Fast J ; , Mei F ; , Shippert T ; , Sivaraman C ; , Tilp A ; , Watson T ; , Zhang Q
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 106 起始页码: 43
结束页码: 55
语种: 英语
英文关键词: Aerodyne aerosol mass spectrometer (AMS)
; Back-trajectory analysis
; Biomass burning
; Organic aerosols
; Rural
Scopus关键词: Aerosols
; Atmospheric radiation
; Carbon monoxide
; Isoprene
; Particulate emissions
; Rural areas
; Spatial distribution
; Trajectories
; Urban transportation
; Aerodyne aerosol mass spectrometer
; Atmospheric radiation measurement programs
; Back trajectory analysis
; Biomass-burning
; National emissions inventories
; Organic aerosol
; Physio-chemical properties
; Positive Matrix Factorization
; Chemical speciation
; ammonium nitrate
; carbon monoxide
; isoprene
; nitrate
; aerodynamics
; aerosol composition
; aerosol formation
; air mass
; anthropogenic source
; biogenic emission
; biomass burning
; emission inventory
; isoprene
; physicochemical property
; spatial distribution
; speciation (chemistry)
; sulfate
; aerosol
; altitude
; Article
; biomass
; boundary layer
; circadian rhythm
; mass
; measurement
; oxidation
; particle size
; priority journal
; rural area
; seasonal variation
; spring
; summer
; temperature
; temperature sensitivity
; winter
; Great Plains
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: In this study the long-term trends of non-refractory submicrometer aerosol (NR-PM1) composition and mass concentration measured by an Aerosol Chemical Speciation Monitor (ACSM) at the Atmospheric Radiation Measurement (ARM) program's Southern Great Plains (SGP) site are discussed. NR-PM1 data was recorded at ~30min intervals over a period of 19 months between November 2010 and June 2012. Positive Matrix Factorization (PMF) was performed on the measured organic mass spectral matrix using a rolling window technique to derive factors associated with distinct sources, evolution processes, and physiochemical properties. The rolling window approach also allows us to capture the dynamic variations of the chemical properties in the organic aerosol (OA) factors over time. Three OA factors were obtained including two oxygenated OA (OOA) factors, differing in degrees of oxidation, and a biomass burning OA (BBOA) factor. Back trajectory analyses were performed to investigate possible sources of major NR-PM1 species at the SGP site. Organics dominated NR-PM1 mass concentration for the majority of the study with the exception of winter, when ammonium nitrate increases due to transport of precursor species from surrounding urban and agricultural areas and also due to cooler temperatures. Sulfate mass concentrations have little seasonal variation with mixed regional and local sources. In the spring BBOA emissions increase and are mainly associated with local fires. Isoprene and carbon monoxide emission rates were obtained by the Model of Emissions of Gases and Aerosols from Nature (MEGAN) and the 2011 U.S. National Emissions Inventory to represent the spatial distribution of biogenic and anthropogenic sources, respectively. The combined spatial distribution of isoprene emissions and air mass trajectories suggest that biogenic emissions from the southeast contribute to SOA formation at the SGP site during the summer. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81937
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Environmental Toxicology, University of California, 1 Shields Ave., Davis, CA, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Brookhaven National Laboratory, Upton, NY, United States
Recommended Citation:
Parworth C,, Fast J,, Mei F,et al. Long-term measurements of submicrometer aerosol chemistry at the Southern Great Plains (SGP) using an Aerosol Chemical Speciation Monitor (ACSM)[J]. Atmospheric Environment,2015-01-01,106