DOI: 10.1016/j.atmosenv.2014.10.041
Scopus记录号: 2-s2.0-84912074175
论文题名: Summer deposition of sulfate and reactive nitrogen to two alpine valleys in the Canadian Rocky Mountains
作者: Wasiuta V ; , Lafrenière M ; J ; , Norman A ; -L ; , Hastings M ; G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 101 起始页码: 270
结束页码: 285
语种: 英语
英文关键词: Alpine
; Bulk precipitation
; Deposition
; Reactive nitrogen
; Stable isotope
; Sulfate
Scopus关键词: Deposition
; Facings
; Isotopes
; Nitrogen
; Pollution
; Sulfur compounds
; Alpine
; Bulk precipitation
; Reactive nitrogen
; Stable isotopes
; Sulfate
; Landforms
; ammonia
; nitrate
; nitrogen 15
; oxygen 18
; stable isotope
; sulfate
; air mass
; alpine environment
; atmospheric deposition
; atmospheric pollution
; mass transport
; nitrogen
; precipitation (chemistry)
; stable isotope
; sulfate
; air pollutant
; airflow
; Article
; atmospheric deposition
; atmospheric transport
; Canada
; combustion
; exhaust gas
; geographic distribution
; summer
; weather
; Canada
; Rocky Mountains
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: Summer deposition of sulfate and reactive nitrogen (mainly nitrate, and ammonium) to two alpine valleys in the Southern Canadian Rocky Mountains was investigated to constrain their major sources and evaluate physiographic influences on deposition. The effects of elevation, aspect, and air mass trajectory were evaluated using stable isotope composition (δ15N-NO3-, δ18O-NO3-, and δ34S-SO42-) and major ion concentrations for bulk precipitation. Deposition in the two valleys was related to synoptic scale weather conditions and the route the air mass followed, the location of major emission sources relative to the study site, and atmospheric residence time. Distinct differences in deposition at a relatively small scale between two opposing alpine valleys was mainly related to the orientation of the two valleys relative to the physiography of the Western Canadian Cordillera and the dominant pathways of air mass transport. Sulfate was found to be dominantly from distant sources, while NO3- was strongly enhanced by emissions from local to regional combustion. Local to regional pollutants were preferentially transported to the NNW facing Robertson Valley during NW-upslope synoptic conditions while precipitation in the SE facing Haig Valley was from relatively clean air with minimal influence from local and regional pollutants particularly at the highest elevation site. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82155
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Geography, Queen's University, Mackintosh-Corry Hall, Kingston, ON, Canada; Department of Physics and Astronomy, University of Calgary, 834 Campus Place NW, 2500 University Drive NW, Calgary, AB, Canada; BSc Environmental Science Program, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada; Department of Geological Sciences, Brown University, 324 Brook Street, Box 1846, Providence, RI, United States
Recommended Citation:
Wasiuta V,, Lafrenière M,J,et al. Summer deposition of sulfate and reactive nitrogen to two alpine valleys in the Canadian Rocky Mountains[J]. Atmospheric Environment,2015-01-01,101