DOI: 10.1002/2013JD020197
论文题名: Methyl chloride variability in the Taylor Dome ice core during the Holocene
作者: Verhulst K.R. ; Aydin M. ; Saltzman E.S.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 21 起始页码: 12218
结束页码: 12228
语种: 英语
英文关键词: chloromethane
; Holocene
; ice cores
; methane
; methyl chloride
; trace gases
Scopus关键词: Atmospheric chemistry
; Domes
; Gases
; Ice
; Methane
; Salinity measurement
; Tropics
; Chloromethane
; Holocenes
; Ice core
; Methyl chlorides
; Trace-gases
; Chlorine compounds
; Holocene
; ice core
; Last Glacial
; methane
; methyl chloride
; trace gas
; Antarctica
; East Antarctica
; Taylor Dome
英文摘要: Methyl chloride (CH3 Cl) is a naturally occurring, ozone-depleting trace gas and one of the most abundant chlorinated compounds in the atmosphere. CH3 Cl was measured in air from the Taylor Dome ice core in East Antarctica to reconstruct an atmospheric record for the Holocene (11-0 kyr B.P.) and part of the last glacial period (50-30 kyr B.P.). CH 3 Cl variability throughout the Holocene is strikingly similar to that of atmospheric methane (CH4 ), with higher levels in the early and late Holocene, and a well-defined minimum during mid-Holocene. The sources and sinks of atmospheric CH3 Cl and CH4 are located primarily in the tropics, and variations in their atmospheric levels likely reflect changes in tropical conditions. CH3 Cl also appears to correlate with atmospheric CH4 during the last glacial period (50-30 kyr B.P.), although the temporal resolution of sampling is limited. The Taylor Dome data provide information about the range of natural variability of atmospheric CH3 Cl and place a new constraint on the causes of past CH 4 variability. Key Points Methyl chloride has a mid-Holocene minimum. Methyl chloride and methane have similar Holocene variability. These trends likely reflect changes in tropical sources or sinks. © 2013 The Authors. Journal of Geophysical Research: Atmospheres published by Wiley on behalf of the American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63179
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Earth System Science, University of California, 1212 Croul Hall, Irvine, CA 92697, United States
Recommended Citation:
Verhulst K.R.,Aydin M.,Saltzman E.S.. Methyl chloride variability in the Taylor Dome ice core during the Holocene[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(21)