globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50537
论文题名:
Nitrogen, Aerosol Composition, and Halogens on a Tall Tower (NACHTT): Overview of a wintertime air chemistry field study in the front range urban corridor of Colorado
作者: Brown S.S.; Thornton J.A.; Keene W.C.; Pszenny A.A.P.; Sive B.C.; Dubé W.P.; Wagner N.L.; Young C.J.; Riedel T.P.; Roberts J.M.; Vandenboer T.C.; Bahreini R.; Öztürk F.; Middlebrook A.M.; Kim S.; Hübler G.; Wolfe D.E.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:14
起始页码: 8067
结束页码: 8085
语种: 英语
英文关键词: aerosols ; halogens ; NACHTT ; nitrogen oxides ; winter air quality
Scopus关键词: Air quality ; Atmospheric chemistry ; Chlorine compounds ; Free radicals ; Gases ; Inorganic acids ; Nitrogen ; Nitrogen oxides ; Volatile organic compounds ; Above ground level ; Aerosol composition ; Aerosol distribution ; Denver , Colorado ; halogens ; Ionic composition ; NACHTT ; Oil and gas activities ; Aerosols ; aerosol ; atmospheric chemistry ; boundary layer ; chemical composition ; hydroxyl radical ; nitrogen compound ; nitrogen oxides ; volatile organic compound ; Colorado ; United States
英文摘要: The Nitrogen, Aerosol Composition, and Halogens on a Tall Tower (NACHTT) field experiment took place during late winter, 2011, at a site 33 km north of Denver, Colorado. The study included fixed-height measurements of aerosols, soluble trace gases, and volatile organic compounds near surface level, as well as vertically resolved measurements of nitrogen oxides, aerosol composition, soluble gas-phase acids, and halogen species from 3 to 270 m above ground level. There were 1928 individual profiles during the three-week campaign to characterize trace gas and aerosol distributions in the lower levels of the boundary layer. Nitrate and ammonium dominated the ionic composition of aerosols and originated primarily from local or regional sources. Sulfate and organic matter were also significant and were associated primarily with longer-range transport to the region. Aerosol chloride was associated primarily with supermicron size fractions and was always present in excess of gas-phase chlorine compounds. The nighttime radical reservoirs, nitryl chloride, ClNO 2, and nitrous acid, HONO, were both consistently present in nighttime urban air. Nitryl chloride was especially pronounced in plumes from large point sources sampled aloft at night. Nitrous acid was typically most concentrated near the ground surface and was the dominant contributor (80%) to diurnally averaged primary OH radical production in near-surface air. Large observed mixing ratios of light alkanes, both in near-surface air and aloft, were attributable to local emissions from oil and gas activities. Key Points NACHTT was a winter atmospheric chemistry study near Denver, Colorado Vertically resolved measurements of nitrogen oxides, aerosols and halogens ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63518
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: Chemical Sciences Division, Earth System Research Laboratory, NOAA, Boulder CO 80305, United States; Department of Atmospheric Sciences, University of Washington, Seattle WA, United States; Department of Environmental Sciences, University of Virginia, Charlottesville VA, United States; Institute for the Study of Earth Oceans and Space, University of New Hampshire, Durham NH, United States; Department of Chemistry, Appalachian State University, Boone NC, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder CO, United States; Department of Chemistry, Memorial University, St. Johns NL, Canada; Department of Chemistry, University of Toronto, Toronto ON, Canada; Department of Environmental Sciences, University of California, Riverside CA, United States; Environmental Engineering Department, Faculty of Engineering and Architecture, Abant Izzet Baysal University, Bolu, Turkey; Atmospheric Chemistry Division, Earth System Laboratory, National Center for Atmospheric Research, Boulder CO, United States; Department of Earth System Science, School of Physical Sciences, University of California, Irvine, CA, United States

Recommended Citation:
Brown S.S.,Thornton J.A.,Keene W.C.,et al. Nitrogen, Aerosol Composition, and Halogens on a Tall Tower (NACHTT): Overview of a wintertime air chemistry field study in the front range urban corridor of Colorado[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(14)
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