globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50637
论文题名:
Chlorine activation within urban or power plant plumes: Vertically resolved ClNO<inf>2</inf> and Cl<inf>2</inf> measurements from a tall tower in a polluted continental setting
作者: Riedel T.P.; Wagner N.L.; Dubé W.P.; Middlebrook A.M.; Young C.J.; Öztürk F.; Bahreini R.; Vandenboer T.C.; Wolfe D.E.; Williams E.J.; Roberts J.M.; Brown S.S.; Thornton J.A.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:15
起始页码: 8702
结束页码: 8715
语种: 英语
英文关键词: NACHTT ; nitryl chloride ; yields
Scopus关键词: Aerosols ; Chlorine ; Chlorine compounds ; Combustion ; Mixing ; Nitrogen ; Nitrogen oxides ; Towers ; Aerosol surface area ; Anthropogenic activity ; Dinitrogen pentoxide ; Heterogeneous reactions ; NACHTT ; nitryl chloride ; yields ; Phase measurement ; atmospheric plume ; atmospheric pollution ; chlorine ; coastal zone ; combustion ; measurement method ; mixing ratio ; nitrogen compound ; ozone ; pollutant source ; power plant ; surface layer ; urban area ; urban pollution
英文摘要: Nitryl chloride (ClNO2) is a chlorine atom source and reactive nitrogen reservoir formed during the night by heterogeneous reactions of dinitrogen pentoxide on chloride-containing aerosol particles. The main factors that influence ClNO2 production include nitrogen oxides, ozone, aerosol surface area, soluble chloride, and ambient relative humidity. Regions with strong anthropogenic activity therefore have large ClNO2 formation potential even inland of coastal regions due to transport or local emissions of soluble chloride. As part of the Nitrogen, Aerosol Composition, and Halogens on a Tall Tower field study, we report wintertime vertically resolved ClNO2 and molecular chlorine (Cl2) measurements taken on a 300 m tall tower located at NOAA's Boulder Atmospheric Observatory in Weld County, CO, during February and March of 2011. Gas and particle phase measurements aboard the tower carriage allowed for a detailed description of the chemical state of the nocturnal atmosphere as a function of height. These observations show significant vertical structure in ClNO2 and Cl 2 mixing ratios that undergo dynamic changes over the course of a night. Using these measurements, we focus on two distinct combustion plume events where ClNO2 mixing ratios reached 600 and 1300 parts per trillion by volume, respectively, aloft of the nocturnal surface layer. We infer ClNO2 yields from N2O5-aerosol reactions using both observational constraints and box modeling. The derived yields in these plumes suggest efficient ClNO2 production compared to the campaign average, where in-plume yields range from 0.3 to 1; the campaign average yield in the boundary layer is 0.05 ± 0.15, with substantial night-to-night and within night variability similar to previous measurements in this region. Key Points Vertical measurements of ClNO2 and Cl2 show large variability with height. ClNO2 is enhanced in air only from polluted sectors. Evidence for ClNO2 and Cl2 production/emission from local combustion sources. ©2013. American Geophysical Union. All Rights Reserved.
资助项目: NESSF NNX10AN48H
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63479
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Department of Chemistry, University of Washington, Seattle WA, United States; Department of Atmospheric Sciences, University of Washington, 408 ATG Building, Box 351640, Seattle, WA 98195, United States; Cooperative Institute for Research in the Environmental Sciences, University of Colorado Boulder, Boulder CO, United States; NOAA Earth System Research Laboratory, Boulder CO, United States; Department of Chemistry, Memorial University of Newfoundland, St. John's, NL, Canada; Environmental Engineering Department, Abant Izzet Baysal University, Bolu, Turkey; Department of Environmental Sciences, University of California, Riverside CA, United States; Department of Chemistry, University of Toronto, Toronto ON, Canada

Recommended Citation:
Riedel T.P.,Wagner N.L.,Dubé W.P.,et al. Chlorine activation within urban or power plant plumes: Vertically resolved ClNO<inf>2</inf> and Cl<inf>2</inf> measurements from a tall tower in a polluted continental setting[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(15)
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