DOI: 10.1002/jgrd.50668
论文题名: A revised 1000 year atmospheric δ13 C-CO<inf>2</inf> record from Law Dome and South Pole, Antarctica
作者: Rubino M. ; Etheridge D.M. ; Trudinger C.M. ; Allison C.E. ; Battle M.O. ; Langenfelds R.L. ; Steele L.P. ; Curran M. ; Bender M. ; White J.W.C. ; Jenk T.M. ; Blunier T. ; Francey R.J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 15 起始页码: 8482
结束页码: 8499
语种: 英语
英文关键词: Antarctica
; carbon stable isotopes
; global carbon cycle
; ice cores
Scopus关键词: Carbon
; Climate change
; Climate models
; Domes
; Ice
; Isotopes
; Poles
; Antarctica
; Atmospheric measurement
; Carbon cycle models
; Carbon stable isotopes
; Global carbon cycle
; Global carbon emission
; Ice core
; Pre-industrial levels
; Carbon dioxide
; anthropogenic effect
; atmosphere-ocean system
; carbon cycle
; carbon dioxide
; carbon emission
; carbon isotope
; climate variation
; firn
; ice core
; Kalman filter
; measurement method
; new record
; Antarctica
; Australia
; Cape Grim
; East Antarctica
; Law Dome
; South Pole
; Tasmania
英文摘要: We present new measurements of δ13C of CO2 extracted from a high-resolution ice core from Law Dome (East Antarctica), together with firn measurements performed at Law Dome and South Pole, covering the last 150 years. Our analysis is motivated by the need to better understand the role and feedback of the carbon (C) cycle in climate change, by advances in measurement methods, and by apparent anomalies when comparing ice core and firn air δ13C records from Law Dome and South Pole. We demonstrate improved consistency between Law Dome ice, South Pole firn, and the Cape Grim (Tasmania) atmospheric δ13C data, providing evidence that our new record reliably extends direct atmospheric measurements back in time. We also show a revised version of early δ13C measurements covering the last 1000 years, with a mean preindustrial level of -6.50‰. Finally, we use a Kalman Filter Double Deconvolution to infer net natural CO2 fluxes between atmosphere, ocean, and land, which cause small δ13C deviations from the predominant anthropogenically induced δ13C decrease. The main features found from the previous δ13C record are confirmed, including the ocean as the dominant cause for the 1940 A.D. CO2 leveling. Our new record provides a solid basis for future investigation of the causes of decadal to centennial variations of the preindustrial atmospheric CO2 concentration. Those causes are of potential significance for predicting future CO2 levels and when attempting atmospheric verification of recent and future global carbon emission mitigation measures through Coupled Climate Carbon Cycle Models. Key Points New and revised, firn and ice δ13C-CO2 measurements from Antarctica Improve consistency between ice and firn δ13C-CO2 measurements Net natural CO2 fluxes between atmosphere, ocean and land inferred ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63476
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: Center for Australian Weather and Climate Research, CSIRO Marine and Atmospheric Research, 107-121 Station Street, Aspendale, VIC 3195, Australia; Center for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark; Department of Physics and Astronomy, Bowdoin College Maine, Brunswick, United States; Department of the Environment and Heritage, Australian Antarctic Division, Antarctic Climate and Ecosystem Cooperative Research Center, Hobart TAS, Australia; Department of Geosciences, Princeton University, Princeton NJ, United States; Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder CO, United States
Recommended Citation:
Rubino M.,Etheridge D.M.,Trudinger C.M.,et al. A revised 1000 year atmospheric δ13 C-CO<inf>2</inf> record from Law Dome and South Pole, Antarctica[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(15)