globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2015JD024187
论文题名:
Analysis of nitrate in the snow and atmosphere at Summit, Greenland: Chemistry and transport
作者: Fibiger D.L.; Dibb J.E.; Chen D.; Thomas J.L.; Burkhart J.F.; Huey L.G.; Hastings M.G.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期:9
起始页码: 5010
结束页码: 5030
语种: 英语
英文关键词: nitrate ; photolysis ; Summit
Scopus关键词: anthropogenic source ; atmospheric chemistry ; atmospheric gas ; atmospheric transport ; concentration (composition) ; isotopic composition ; long range transport ; nitrate ; nitrogen oxides ; ozone ; snow ; Arctic ; Greenland ; Summit
英文摘要: As a major sink of atmospheric nitrogen oxides (NOx = NO + NO2), nitrate (NO3 -) in polar snow can reflect the long-range transport of NOx and related species (e.g., peroxyacetyl nitrate). On the other hand, because NO3 - in snow can be photolyzed, potentially producing gas phase NOx locally, NO3 - in snow (and thus, ice) may reflect local processes. Here we investigate the relationship between local atmospheric composition at Summit, Greenland (72°35′N, 38°25′W) and the isotopic composition of NO3 - to determine the degree to which local processes influence atmospheric and snow NO3 -. Based on snow and atmospheric observations during May-June 2010 and 2011, we find no connection between the local atmospheric concentrations of a suite of gases (BrO, NO, NOy, HNO3, and nitrite (NO2 -)) and the NO3 - isotopic composition or concentration in snow. This suggests that (1) the snow NO3 - at Summit is primarily derived from long-range transport and (2) this NO3 - is largely preserved in the snow. Additionally, three isotopically distinct NO3 - sources were found to be contributing to the NO3 - in the snow at Summit during both 2010 and 2011. Through the complete isotopic composition of NO3 -, we suggest that these sources are local anthropogenic particulate NO3 - from station activities (δ15N = 16‰, Δ17O = 4‰, and δ18O = 23‰), NO3 - formed from midlatitude NOx (δ15N = -10‰, Δ17O = 29‰, δ18O = 78‰) and a NO3 - source that is possibly influenced by or derived from stratospheric ozone NO3 - (δ15N = 5‰, Δ17O = 39‰, δ18O = 100‰). © 2016. 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/62879
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, Brown University, Providence, RI, United States; NOAA/ESRL/CSD, Boulder, CO, United States; Earth System Research Center, Institute for the Study of the Earth, Ocean and Space, University of New Hampshire, Durham, NH, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, GA, Atlanta, United States; LATMOS/ISPL, UPMC Univ. Paris 06, Sorbonne Universités, UVSQ, CNRS, Paris, France; Department of Geosciences, University of Oslo, Oslo, Norway; Sierra Nevada Research Institute, University of California, Merced, CA, United States; Department of Earth Environmental and Planetary Sciences, Institute at Brown for Environment and Society, Brown University, Providence, RI, United States

Recommended Citation:
Fibiger D.L.,Dibb J.E.,Chen D.,et al. Analysis of nitrate in the snow and atmosphere at Summit, Greenland: Chemistry and transport[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(9)
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