DOI: 10.1016/j.atmosenv.2014.11.007
Scopus记录号: 2-s2.0-84910021278
论文题名: Ice core profiles of saturated fatty acids (C12:0-C30:0) and oleic acid (C18:1) from southern Alaska since 1734 AD: A link to climate change in the Northern Hemisphere
作者: Pokhrel A ; , Kawamura K ; , Seki O ; , Matoba S ; , Shiraiwa T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 100 起始页码: 202
结束页码: 209
语种: 英语
英文关键词: Alaskan ice core
; Atmospheric circulation
; Atmospheric transport
; Climate change
; Fatty acids
; Marine-derived organic matter
Scopus关键词: Atmospheric movements
; Biogeochemistry
; Biological materials
; Chains
; Chemical analysis
; Chromatographic analysis
; Climate change
; Climatology
; Gas chromatography
; Ice
; Oleic acid
; Organic compounds
; Palmitic acid
; Saturated fatty acids
; Unsaturated fatty acids
; Atmospheric circulation
; Atmospheric transport
; Gc/mass spectrometries
; Ice core
; Molecular distribution
; Pacific decadal oscillation
; Short-chain fatty acids
; Straight chain fatty acids
; Fatty acids
; carbon
; ion
; lignoceric acid
; long chain fatty acid
; myristic acid
; oleic acid
; palmitic acid
; saturated fatty acid
; short chain fatty acid
; soil organic matter
; tracer
; air-sea interaction
; atmospheric circulation
; atmospheric transport
; chemical composition
; climate oscillation
; climate variation
; fatty acid
; gas chromatography
; ice core
; Northern Hemisphere
; organic matter
; temperature anomaly
; aerosol
; Article
; atmospheric transport
; chemical composition
; climate change
; correlation analysis
; dust
; gas chromatography
; geographic distribution
; ice core record
; mass fragmentography
; Northern Hemisphere
; oscillation
; periodicity
; phytoplankton
; United States
; vascular plant
; Alaska
; Alaska Range
; Aurora Peak
; 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: An ice core drilled at Aurora Peak in southeast Alaska was analyzed for homologous series of straight chain fatty acids (C12:0-C30:0) including unsaturated fatty acid (oleic acid) using gas chromatography (GC/FID) and GC/mass spectrometry (GC/MS). Molecular distributions of fatty acids are characterized by even carbon number predominance with a peak at palmitic acid (C16:0, av. 20.3±SD. 29.8ng/g-ice) followed by oleic acid (C18:1, 19.6±38.6ng/g-ice) and myristic acid (C14:0, 15.3±21.9ng/g-ice). The historical trends of short-chain fatty acids, together with correlation analysis with inorganic ions and organic tracers suggest that short-chain fatty acids (except for C12:0 and C15:0) were mainly derived from sea surface micro layers through bubble bursting mechanism and transported over the glacier through the atmosphere. This atmospheric transport process is suggested to be linked with Kamchatka ice core δD record from Northeast Asia and Greenland Temperature Anomaly (GTA). In contrast, long-chain fatty acids (C20:0-C30:0) are originated from terrestrial higher plants, soil organic matter and dusts, which are also linked with GTA. Hence, this study suggests that Alaskan fatty acids are strongly influenced by Pacific Decadal Oscillation/North Pacific Gyre Oscillation and/or extra tropical North Pacific surface climate and Arctic oscillation. We also found that decadal scale variability of C18:1/C18:0 ratios in the Aurora Peak ice core correlate with the Kamchatka ice core δD, which reflects climate oscillations in the North Pacific. This study suggests that photochemical aging of organic aerosols could be controlled by climate periodicity. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82076
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan
Recommended Citation:
Pokhrel A,, Kawamura K,, Seki O,et al. Ice core profiles of saturated fatty acids (C12:0-C30:0) and oleic acid (C18:1) from southern Alaska since 1734 AD: A link to climate change in the Northern Hemisphere[J]. Atmospheric Environment,2015-01-01,100