DOI: 10.1002/2013GL058167
论文题名: Insights into anthropogenic nitrogen deposition to the North Atlantic investigated using the isotopic composition of aerosol and rainwater nitrate
作者: Gobel A.R. ; Altieri K.E. ; Peters A.J. ; Hastings M.G. ; Sigman D.M.
刊名: Geophysical Research Letters
ISSN: 0094-8380
EISSN: 1944-8111
出版年: 2013
卷: 40, 期: 22 起始页码: 5977
结束页码: 5982
语种: 英语
英文关键词: marine aerosol
; marine rainwater
; nitrogen
; stable isotopes of nitrate
; subtropical North Atlantic
Scopus关键词: Anthropogenic emissions
; Atmospheric circulation patterns
; Isotopic composition
; Kinetic isotope effects
; Marine aerosols
; marine rainwater
; North Atlantic
; Stable isotopes
; Isotopes
; Nitrates
; Nitrogen
; Aerosols
; aerosol composition
; air mass
; anthropogenic effect
; atmospheric circulation
; atmospheric deposition
; atmospheric pollution
; halogen
; isotopic composition
; marine atmosphere
; marine ecosystem
; nitrate
; rainwater
; reaction kinetics
; seasonality
; stable isotope
; Atlantic Ocean
; Atlantic Ocean (North)
英文摘要: Identifying the dominant sources of atmospheric reactive nitrogen (N r) is critical for determining the influence of anthropogenic emissions on Nr deposition, especially in marine ecosystems. To test the influence of anthropogenic versus marine air masses, samples were collected in Bermuda, where seasonal atmospheric circulation patterns lead to greater continental transport during the cool season. The 15N/14N of aerosol nitrate (NO3 -) indicates changes in N r sources and its 18O/16O indicates a seasonal shift in the relative strength of pathways of NO3 - formation. The aerosol δ15N-NO3 - was consistently lower than or equal to the rainwater from the same sampling period, the opposite trend of that observed in polluted systems. We propose that this is due to HNO3(g) uptake onto aerosol particles with a kinetic isotope effect, lowering the aerosol δ15N-NO3 - relative to residual HNO3(g). The aerosol δ18O-NO3 - was higher than that in rainwater during the cool season, but was not different during the warm season, which we tentatively attribute to the increased importance of heterogeneous halogen chemistry on the formation of NO3 - during the cool season. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887760217&doi=10.1002%2f2013GL058167&partnerID=40&md5=1b9aaabaa73d333b1d2f74ea4331c69b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5644
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geosciences, Princeton University, Princeton, NJ, United States
Recommended Citation:
Gobel A.R.,Altieri K.E.,Peters A.J.,et al. Insights into anthropogenic nitrogen deposition to the North Atlantic investigated using the isotopic composition of aerosol and rainwater nitrate[J]. Geophysical Research Letters,2013-01-01,40(22).