DOI: 10.1002/2016GL069482
论文题名: Sulfur isotopic composition of surface snow along a latitudinal transect in East Antarctica
作者: Uemura R. ; Masaka K. ; Fukui K. ; Iizuka Y. ; Hirabayashi M. ; Motoyama H.
刊名: Geophysical Research Letters
ISSN: 0094-8975
EISSN: 1944-8706
出版年: 2016
卷: 43, 期: 11 起始页码: 5878
结束页码: 5885
语种: 英语
英文关键词: Antarctica
; climate
; DMS
; ice core
; sulfate aerosols
; sulfur isotopes
Scopus关键词: Aerosols
; Isotopes
; Snow
; Sulfur compounds
; Antarctica
; climate
; Ice core
; Sulfate aerosols
; Sulfur isotope
; Sulfur
英文摘要: The sulfur stable isotopic values (δ34S) of sulfate aerosols can be used to assess oxidation pathways and contributions from various sources, such as marine biogenic sulfur, volcanoes, and sea salt. However, because of a lack of observations, the spatial distribution of δ34S values in Antarctic sulfate aerosols remains unclear. Here we present the first sulfur isotopic values from surface snow samples along a latitudinal transect in eastern Dronning Maud Land, East Antarctica. The δ34S values of sulfate showed remarkably uniform values, in the range of 14.8–16.9‰, and no significant decrease toward the inland part of the transect was noted. These results suggest that net isotopic fractionation during long-range transport is insignificant. Thus, the δ34S values can be used to infer source contributions. The δ34S values suggest that marine biogenic sulfur is the dominant source of sulfate aerosols, with a fractional contribution of 84 ± 16%. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977103727&doi=10.1002%2f2016GL069482&partnerID=40&md5=d305c2d830f9f8e8eb107a64bd492eae
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9938
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Chemistry, Biology and Marine Science, Faculty of Science, University of the Ryukyus, Okinawa, Japan
Recommended Citation:
Uemura R.,Masaka K.,Fukui K.,et al. Sulfur isotopic composition of surface snow along a latitudinal transect in East Antarctica[J]. Geophysical Research Letters,2016-01-01,43(11).