DOI: 10.1002/2014GL061957
论文题名: Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present
作者: Bereiter B. ; Eggleston S. ; Schmitt J. ; Nehrbass-Ahles C. ; Stocker T.F. ; Fischer H. ; Kipfstuhl S. ; Chappellaz J.
刊名: Geophysical Research Letters
ISSN: 0094-9012
EISSN: 1944-8743
出版年: 2015
卷: 42, 期: 2 起始页码: 542
结束页码: 549
语种: 英语
英文关键词: CO2
; Dome C
; EPICA
; greenhouse gas
; ice core
Scopus关键词: Domes
; Extraction
; Greenhouse gases
; Ice
; Air extraction
; Analytical artifact
; EPICA
; European project
; Gas extractions
; Ice core
; Ice structures
; Last glacial cycles
; Carbon dioxide
; atmospheric chemistry
; carbon dioxide
; climate change
; concentration (composition)
; ice core
; Antarctica
英文摘要: The European Project for Ice Coring in Antarctica Dome ice core from Dome C (EDC) has allowed for the reconstruction of atmospheric CO2 concentrations for the last 800,000-years. Here we revisit the oldest part of the EDC CO2 record using different air extraction methods and sections of the core. For our established cracker system, we found an analytical artifact, which increases over the deepest 200-m and reaches 10.1-±-2.4-ppm in the oldest/deepest part. The governing mechanism is not yet fully understood, but it is related to insufficient gas extraction in combination with ice relaxation during storage and ice structure. The corrected record presented here resolves partly - but not completely - the issue with a different correlation between CO2 and Antarctic temperatures found in this oldest part of the records. In addition, we provide here an update of 800,000-years atmospheric CO2 history including recent studies covering the last glacial cycle. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923604595&doi=10.1002%2f2014GL061957&partnerID=40&md5=1e9fc6b1a975fe25499d60b828f09241
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8628
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: Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland
Recommended Citation:
Bereiter B.,Eggleston S.,Schmitt J.,et al. Revision of the EPICA Dome C CO2 record from 800 to 600-kyr before present[J]. Geophysical Research Letters,2015-01-01,42(2).