DOI: 10.1016/j.atmosenv.2015.08.062
Scopus记录号: 2-s2.0-84940993443
论文题名: Mineral dust and major ion concentrations in snowpit samples from the NEEM site, Greenland
作者: Kang J ; -H ; , Hwang H ; , Hong S ; B ; , Hur S ; D ; , Choi S ; -D ; , Lee J ; , Hong S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 120 起始页码: 137
结束页码: 143
语种: 英语
英文关键词: Atmospheric mineral dust
; Greenland
; Major ions
; Seasonal variation
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric movements
; Calcium
; Glaciers
; Ice
; Ions
; Isotopes
; Minerals
; Particulate emissions
; Atmospheric mineral dust
; Back trajectory analysis
; Environmental conditions
; Greenland
; Long-range atmospheric transports
; Major ions
; Methane sulfonic acid
; Seasonal variation
; Dust
; calcium ion
; deuterium
; ion
; mesylic acid
; sodium ion
; aerosol
; air mass
; atmospheric deposition
; atmospheric transport
; concentration (composition)
; dust
; ice sheet
; ionic composition
; seasonal variation
; spatiotemporal analysis
; stable isotope
; trajectory
; trench
; aerosol
; Article
; atmospheric deposition
; China
; concentration (parameters)
; Greenland
; ice sheet
; mineral dust
; Mongolia
; priority journal
; spring
; summer
; winter
; Arctic
; Canada
; Canadian Arctic
; China
; Greenland
; Greenland Ice Sheet
; Mongolia
; North America
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: Polar ice sheets conserve atmospheric aerosols at the time of snowfall, which can be used to reconstruct past climate and environmental conditions. We investigated mineral dust and major ion records in snowpit samples obtained from the northwestern Greenland ice sheet near the North Greenland Eemian Ice Drilling (NEEM) camp in June 2009. We analyzed the samples for mineral dust concentrations as well as stable water isotopes (δ18O, δD, and deuterium excess) and major ions (Cl-, SO42-, methanesulfonic acid (MSA), Na+, and Ca2+). Seasonal δ18O and δD cycles indicate that the snowpit samples covered a six-year period from spring 2003 to early summer 2009. Concentrations of mineral dust, nss-Ca2+, and nss-SO42- showed seasonal deposition events with maxima in the winter-spring layers. On the other hand, the Cl-/Na+ ratio and the concentrations of MSA exhibited maxima in the summer layers, making them useful indicators for the summer season. Moreover, an anomalous atmospheric mineral dust event was recorded at a depth of 165-170 cm corresponding to late winter 2005 to spring 2006. A back trajectory analysis suggests that a major contributor to the Greenland aerosol was an air mass passing over the Canadian Arctic and North America. Several trajectories point to Asian regions as a dust source. The mineral dust deposited at NEEM was strongly influenced by long-range atmospheric transport and dust input from arid source areas in northern China and Mongolia. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81489
Appears in Collections: 气候变化事实与影响
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作者单位: Division of Climate Change Sciences, Korea Polar Research Institute, Incheon, South Korea; School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea; Department of Science Education, Ewha Womans University, Seoul, South Korea; Department of Ocean Sciences, Inha University, Incheon, South Korea
Recommended Citation:
Kang J,-H,, Hwang H,et al. Mineral dust and major ion concentrations in snowpit samples from the NEEM site, Greenland[J]. Atmospheric Environment,2015-01-01,120