DOI: 10.1016/j.atmosenv.2015.05.041
Scopus记录号: 2-s2.0-84930685592
论文题名: Nighttime air quality under desert conditions
作者: Goliff W ; S ; , Luria M ; , Blake D ; R ; , Zielinska B ; , Hallar G ; , Valente R ; J ; , Lawson C ; V ; , Stockwell W ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 114 起始页码: 102
结束页码: 111
语种: 英语
英文关键词: 0-D modeling
; Free troposphere
; Nighttime chemistry
; Nitrate radical
; Tropospheric measurements
Scopus关键词: Air quality
; Atmospheric chemistry
; Boundary layers
; Fires
; Inorganic compounds
; Nitrates
; Olefins
; Reaction kinetics
; Troposphere
; Aldehyde reactions
; Elevated concentrations
; Free troposphere
; Inorganic chemistry
; Nitrate radicals
; Nitric acid formation
; Optical absorbance
; Stable nocturnal boundary layers
; Importance sampling
; acetone
; aldehyde
; alkene derivative
; carbon monoxide
; isoprene
; nitrate
; nitric acid
; pinene
; aldehyde
; alkene
; atmospheric chemistry
; atmospheric modeling
; boundary layer
; concentration (composition)
; desert
; measurement method
; nitrate
; nitric acid
; radical
; troposphere
; urban area
; wildfire
; absorption spectroscopy
; air quality
; air temperature
; Article
; biomass
; boundary layer
; case study
; desert
; differential optical absorbance spectrometry
; dry deposition
; humidity
; inorganic chemistry
; night
; particle size
; particulate matter
; priority journal
; steady state
; troposphere
; United States
; urban area
; water vapor
; Nevada
; Reno
; United States
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: Nighttime concentrations of the gas phase nitrate radical (NO3 ) were successfully measured during a four week field campaign in an arid urban location, Reno Nevada, using long-path Differential Optical Absorbance Spectrometry (DOAS). While typical concentrations of NO3 ranged from 5 to 20ppt, elevated concentrations were observed during a wildfire event. Horizontal mixing in the free troposphere was considerable because the sampling site was above the stable nocturnal boundary layer every night and this justified a box modeling approach. Process analysis of box model simulations showed NO3 accounted for approximately half of the loss of internal olefins, 60% of the isoprene loss, and 85% of the α-pinene loss during the nighttime hours during a typical night of the field study. The NO3 +aldehyde reactions were not as important as anticipated. On a polluted night impacted by wildfires upwind of the sampling location, NO3 reactions were more important. Model simulations overpredicted NO2 concentrations for both case studies and inorganic chemistry was the biggest influence on NO3 concentrations and on nitric acid formation. The overprediction may be due to additional NO2 loss processes that were not included in the box model, as deposition and N2 O5 uptake had no significant effect on NO2 levels. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81631
Appears in Collections: 气候变化事实与影响
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作者单位: College of Engineering, Center for Environmental Research and Technology, University of California, Riverside, United States; The Hebrew University in Jerusalem, Earth Science Institute, Israel; Department of Chemistry, University of California, Irvine, United States; Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, United States; Environmental Technologies Department, Tennessee Valley Authority, Muscle Shoals, AL, United States; Howard University, Department of Chemistry, Washington, DC, United States; Environmental Sciences, Shell Global Solutions (US), Houston, TX, United States
Recommended Citation:
Goliff W,S,, Luria M,et al. Nighttime air quality under desert conditions[J]. Atmospheric Environment,2015-01-01,114