DOI: 10.1002/2015GL066854
论文题名: Preindustrial atmospheric ethane levels inferred from polar ice cores: A constraint on the geologic sources of atmospheric ethane and methane
作者: Nicewonger M.R. ; Verhulst K.R. ; Aydin M. ; Saltzman E.S.
刊名: Geophysical Research Letters
ISSN: 0094-9486
EISSN: 1944-9217
出版年: 2016
卷: 43, 期: 1 起始页码: 214
结束页码: 221
语种: 英语
英文关键词: biomass burning
; ethane
; geologic
; ice cores
; paleoatmosphere
; trace gases
Scopus关键词: Atmospheric chemistry
; Biomass
; Budget control
; Glacial geology
; Ice
; Methane
; Biomass-burning
; Geologic
; Ice core
; Paleo-atmosphere
; Trace-gases
; Ethane
; biomass burning
; data set
; emission inventory
; ethane
; ice core
; methane
; Northern Hemisphere
; paleoatmosphere
; polar region
; pollutant source
; Southern Hemisphere
; trace gas
; Antarctica
; Arctic
; Greenland
英文摘要: Ethane levels were measured in air extracted from Greenland and Antarctic ice cores ranging in age from 994 to 1918 Common Era (C.E.) There is good temporal overlap between the two data sets from 1600 to 1750 C.E. with ethane levels stable at 397 ± 28 parts per trillion (ppt) (±2 standard error (s.e.)) over Greenland and 103 ± 9 ppt over Antarctica. The observed north/south interpolar ratio of ethane (3.9 ± 0.1, 1σ) implies considerably more ethane emissions in the Northern Hemisphere than in the Southern Hemisphere, suggesting geologic ethane sources contribute significantly to the preindustrial ethane budget. Box model simulations based on these data constrain the global geologic emissions of ethane to 2.2-3.5 Tg yr-1 and biomass burning emissions to 1.2-2.5 Tg yr-1 during the preindustrial era. The results suggest biomass burning emissions likely increased since the preindustrial period. Biomass burning and geologic outgassing are also sources of atmospheric methane. The results place constraints on preindustrial methane emissions from these sources. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84970892358&doi=10.1002%2f2015GL066854&partnerID=40&md5=c0f1e48c3d1db4c326c8ffeba644f0cf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10449
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 Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Nicewonger M.R.,Verhulst K.R.,Aydin M.,et al. Preindustrial atmospheric ethane levels inferred from polar ice cores: A constraint on the geologic sources of atmospheric ethane and methane[J]. Geophysical Research Letters,2016-01-01,43(1).