DOI: 10.1016/j.atmosenv.2017.06.043
Scopus记录号: 2-s2.0-85022320401
论文题名: Emissions from prescribed burning of agricultural fields in the Pacific Northwest
作者: Holder A ; L ; , Gullett B ; K ; , Urbanski S ; P ; , Elleman R ; , O'Neill S ; , Tabor D ; , Mitchell W ; , Baker K ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166 起始页码: 22
结束页码: 33
语种: 英语
英文关键词: Agricultural burning
; Bluegrass
; Emission factors
; Organics
; Particulate matter
; Wheat
Scopus关键词: Agriculture
; Air quality
; Airships
; Aromatic hydrocarbons
; Carbon dioxide
; Climate models
; Combustion
; Fuels
; Organic carbon
; Polycyclic aromatic hydrocarbons
; Volatile organic compounds
; Agricultural burning
; Bluegrass
; Emission factors
; Organics
; Particulate Matter
; Wheat
; Laboratories
; organic carbon
; aerosol
; agricultural land
; air quality
; emission inventory
; grass
; organic carbon
; PAH
; particle size
; particulate matter
; PCDD
; PCDF
; prescribed burning
; size distribution
; volatile organic compound
; wheat
; agricultural land
; aircraft
; Article
; biomass
; calibration
; combustion
; controlled study
; exhaust gas
; forest
; grassland
; measurement
; moisture
; nonhuman
; particle size
; Poa pratensis
; prescribed burning
; priority journal
; sampling
; Idaho
; Pacific Northwest
; United States
; Washington [United States]
; Poa
; Poa pratensis
; Triticum aestivum
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: Prescribed burns of winter wheat stubble and Kentucky bluegrass fields in northern Idaho and eastern Washington states (U.S.A.) were sampled using ground-, aerostat-, airplane-, and laboratory-based measurement platforms to determine emission factors, compare methods, and provide a current and comprehensive set of emissions data for air quality models, climate models, and emission inventories. Batch measurements of PM2.5, volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), and polychlorinated dibenzodioxins/dibenzofurans (PCDDs/PCDFs), and continuous measurements of black carbon (BC), particle mass by size, CO, CO2, CH4, and aerosol characteristics were taken at ground level, on an aerostat-lofted instrument package, and from an airplane. Biomass samples gathered from the field were burned in a laboratory combustion facility for comparison with these ground and aerial field measurements. Emission factors for PM2.5, organic carbon (OC), CH4, and CO measured in the field study platforms were typically higher than those measured in the laboratory combustion facility. Field data for Kentucky bluegrass suggest that biomass residue loading is directly proportional to the PM2.5 emission factor; no such relationship was found with the limited wheat data. CO2 and BC emissions were higher in laboratory burn tests than in the field, reflecting greater carbon oxidation and flaming combustion conditions. These distinctions between field and laboratory results can be explained by measurements of the modified combustion efficiency (MCE). Higher MCEs were recorded in the laboratory burns than from the airplane platform. These MCE/emission factor trends are supported by 1–2 min grab samples from the ground and aerostat platforms. Emission factors measured here are similar to other studies measuring comparable fuels, pollutants, and combustion conditions. The size distribution of refractory BC (rBC) was single modal with a log-normal shape, which was consistent among fuel types when normalized by total rBC mass. The field and laboratory measurements of the Angstrom exponent (α) and single scattering albedo (ω) exhibit a strong decreasing trend with increasing MCEs in the range of 0.9–0.99. Field measurements of α and ω were consistently higher than laboratory burns, which is likely due to less complete combustion. When VOC emissions are compared with MCE, the results are consistent for both fuel types: emission factors increase as MCE decreases. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82507
Appears in Collections: 气候变化事实与影响
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作者单位: U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle Park, NC, United States; U.S. Forest Service, Missoula Fire Science Laboratory, Rocky Mountain Research Station, 5775 US Hwy 10W, Missoula, MT, United States; U.S. Environmental Protection Agency, Region 10, Seattle, WA, United States; U.S. Forest Service, Pacific Northwest Research Station, 400 N 34th, St. Suite 201, Seattle, WA, United States; U.S. Environmental Protection Agency, Office of Air Quality Planning & Standards, Research Triangle Park, NC, United States
Recommended Citation:
Holder A,L,, Gullett B,et al. Emissions from prescribed burning of agricultural fields in the Pacific Northwest[J]. Atmospheric Environment,2017-01-01,166