Articles | Volume 12, issue 4
https://doi.org/10.5194/cp-12-1061-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-12-1061-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
26 Apr 2016
Research article |
| 26 Apr 2016
Local artifacts in ice core methane records caused by layered bubble trapping and in situ production: a multi-site investigation
College of Earth, Ocean and Atmospheric Sciences, Oregon
State University, Corvallis OR, USA
now at: Department of Earth Sciences, University of
Cambridge, Cambridge, UK
Xavier Faïn
Université Grenoble Alpes/CNRS, Laboratoire de
Glaciologie et Géophysique de l'Environnement, Grenoble,
France
Edward J. Brook
College of Earth, Ocean and Atmospheric Sciences, Oregon
State University, Corvallis OR, USA
Joseph R. McConnell
Division of Hydrologic Sciences, Desert Research
Institute, Reno NV, USA
Olivia J. Maselli
Division of Hydrologic Sciences, Desert Research
Institute, Reno NV, USA
now at: Department of Chemistry, University of Adelaide, South Australia, Australia
Michael Sigl
Division of Hydrologic Sciences, Desert Research
Institute, Reno NV, USA
Laboratory for Radiochemistry and Environmental
Chemistry, Paul Scherrer Institut, Villigen, Switzerland
Jon Edwards
College of Earth, Ocean and Atmospheric Sciences, Oregon
State University, Corvallis OR, USA
Christo Buizert
College of Earth, Ocean and Atmospheric Sciences, Oregon
State University, Corvallis OR, USA
Thomas Blunier
Centre for Ice and Climate, Niels Bohr Institute,
University of Copenhagen, Copenhagen, Denmark
Jérôme Chappellaz
Université Grenoble Alpes/CNRS, Laboratoire de
Glaciologie et Géophysique de l'Environnement, Grenoble,
France
Johannes Freitag
Alfred Wegener Institute, Helmholtz Centre for Polar and
Marine Research, Bremerhaven, Germany
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- Atmospheric methane variability: Centennial‐scale signals in the Last Glacial Period R. Rhodes et al. 10.1002/2016GB005570
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- Very old firn air linked to strong density layering at Styx Glacier, coastal Victoria Land, East Antarctica Y. Jang et al. 10.5194/tc-13-2407-2019
- Polar ice core organic matter signatures reveal past atmospheric carbon composition and spatial trends across ancient and modern timescales J. D'Andrilli & J. McConnell 10.1017/jog.2021.51
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22 citations as recorded by crossref.
- Novel automated inversion algorithm for temperature reconstruction using gas isotopes from ice cores M. Döring & M. Leuenberger 10.5194/cp-14-763-2018
- Abrupt CO 2 release to the atmosphere under glacial and early interglacial climate conditions C. Nehrbass-Ahles et al. 10.1126/science.aay8178
- CH<sub>4</sub> and N<sub>2</sub>O fluctuations during the penultimate deglaciation L. Schmidely et al. 10.5194/cp-17-1627-2021
- Estimation of gas record alteration in very low-accumulation ice cores K. Fourteau et al. 10.5194/cp-16-503-2020
- Comparison of optical-feedback cavity-enhanced absorption spectroscopy and gas chromatography for ground-based and airborne measurements of atmospheric CO concentration I. Ventrillard et al. 10.5194/amt-10-1803-2017
- Is the Noble Gas‐Based Rate of Ocean Warming During the Younger Dryas Overestimated? S. Shackleton et al. 10.1029/2019GL082971
- The new Kr-86 excess ice core proxy for synoptic activity: West Antarctic storminess possibly linked to Intertropical Convergence Zone (ITCZ) movement through the last deglaciation C. Buizert et al. 10.5194/cp-19-579-2023
- Methane, ethane, and propane production in Greenland ice core samples and a first isotopic characterization of excess methane M. Mühl et al. 10.5194/cp-19-999-2023
- Analytical constraints on layered gas trapping and smoothing of atmospheric variability in ice under low-accumulation conditions K. Fourteau et al. 10.5194/cp-13-1815-2017
- Ice Core Methane Analytical Techniques, Chronology and Concentration History Changes: A Review J. Song 10.3390/su15129346
- Atmospheric methane variability: Centennial‐scale signals in the Last Glacial Period R. Rhodes et al. 10.1002/2016GB005570
- Old carbon reservoirs were not important in the deglacial methane budget M. Dyonisius et al. 10.1126/science.aax0504
- Very old firn air linked to strong density layering at Styx Glacier, coastal Victoria Land, East Antarctica Y. Jang et al. 10.5194/tc-13-2407-2019
- Polar ice core organic matter signatures reveal past atmospheric carbon composition and spatial trends across ancient and modern timescales J. D'Andrilli & J. McConnell 10.1017/jog.2021.51
- A 21 000-year record of fluorescent organic matter markers in the WAIS Divide ice core J. D'Andrilli et al. 10.5194/cp-13-533-2017
- Dispersion in deep polar firn driven by synoptic-scale surface pressure variability C. Buizert & J. Severinghaus 10.5194/tc-10-2099-2016
- Excess methane in Greenland ice cores associated with high dust concentrations J. Lee et al. 10.1016/j.gca.2019.11.020
- New technique for high-precision, simultaneous measurements of CH<sub>4</sub>, N<sub>2</sub>O and CO<sub>2</sub> concentrations; isotopic and elemental ratios of N<sub>2</sub>, O<sub>2</sub> and Ar; and total air content in ice cores by wet extraction I. Oyabu et al. 10.5194/amt-13-6703-2020
- Learning Ground Displacement Signals Directly from InSAR-Wrapped Interferograms L. Moualla et al. 10.3390/s24082637
- Multi-tracer study of gas trapping in an East Antarctic ice core K. Fourteau et al. 10.5194/tc-13-3383-2019
- Pore morphology of polar firn around closure revealed by X-ray tomography A. Burr et al. 10.5194/tc-12-2481-2018
- Northern Hemisphere atmospheric history of carbon monoxide since preindustrial times reconstructed from multiple Greenland ice cores X. Faïn et al. 10.5194/cp-18-631-2022
Latest update: 17 Nov 2024
Short summary
Local artifacts in ice core methane data are superimposed on consistent records of past atmospheric variability. These artifacts are not related to past atmospheric history and care should be taken to avoid interpreting them as such. By investigating five polar ice cores from sites with different conditions, we relate isolated methane spikes to melt layers and decimetre-scale variations as "trapping signal" associated with a difference in timing of air bubble closure in adjacent firn layers.
Local artifacts in ice core methane data are superimposed on consistent records of past...
