DOI: 10.1016/j.atmosenv.2016.12.021
Scopus记录号: 2-s2.0-85002613656
论文题名: Levoglucosan on Tibetan glaciers under different atmospheric circulations
作者: You C ; , Yao T ; , Xu C ; , Song L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 152 起始页码: 1
结束页码: 5
语种: 英语
英文关键词: Fire emissions
; Fire tracer
; Levoglucosan
; Snow chemistry
; Tibetan plateau
Scopus关键词: Carbon
; Snow
; Altitudinal distributions
; Atmospheric circulation
; Equilibrium line altitudes
; Fire emissions
; Levoglucosan
; Snow chemistry
; Tibetan Plateau
; Vertical distributions
; Fires
; black carbon
; levoglucosan
; snow
; atmospheric circulation
; biogenic emission
; biomarker
; biomass burning
; black carbon
; equilibrium line
; glacier flow
; organic compound
; snowmelt
; temporal variation
; tracer
; water chemistry
; westerly
; wind direction
; air temperature
; altitude
; Article
; atmosphere
; geochemistry
; glacier
; precipitation
; priority journal
; seasonal variation
; summer
; surface property
; Tibet
; China
; Qinghai-Xizang Plateau
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: Tibetan glaciers are natural documents of the specific biomass burning biomarker levoglucosan from regions around. However, knowledge about the characteristics of levoglucosan distributions on Tibetan glaciers under the different climate systems is poorly understood. In this study, we detected levoglucosan in snow samples from the Zuoqiupu (ZQP) Glacier affected by the Indian summer monsoon and the Muji (MJ) Glacier dominated by the westerlies. Results found that the ZQP Glacier was more heavily affected by fire emissions than the MJ Glacier, caused by stronger emission sources on the windward direction and shorter transport distances. Elevations for the appearance of levoglucosan maxima on glacier surfaces are roughly around the equilibrium line altitudes. However, levoglucosan displays a wider distribution range on the MJ glacier than on the ZQP glacier due to weaker summer melt. Injection height of fire smokes and glacial melt can affect the altitudinal distribution of levoglucosan. Black carbon and levoglucosan show different temporal variations in snow-pit samples on those two glaciers. The post-depositional effects, e.g. the melting and refreezing processes, can modulate the vertical distribution of levoglucosan in snow/ice layers. Our results are helpful for understanding the geochemical behaviors of levoglucosan happened on Tibetan glacier surfaces. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82219
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; CAS Center for Excellence in Tibetan Plateau Earth Science, Beijing, China; Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
You C,, Yao T,, Xu C,et al. Levoglucosan on Tibetan glaciers under different atmospheric circulations[J]. Atmospheric Environment,2017-01-01,152