Articles | Volume 16, issue 6
https://doi.org/10.5194/cp-16-2431-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-16-2431-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
The SP19 chronology for the South Pole Ice Core – Part 2: gas chronology, Δage, and smoothing of atmospheric records
Jenna A. Epifanio
CORRESPONDING AUTHOR
College of Earth, Ocean, and Atmospheric Sciences, Oregon State
University, Corvallis, OR, USA
Edward J. Brook
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
Jon S. Edwards
College of Earth, Ocean, and Atmospheric Sciences, Oregon State
University, Corvallis, OR, USA
Todd A. Sowers
The Earth and Environmental Systems Institute, Pennsylvania State
University, University Park, PA, USA
Emma C. Kahle
Department of Earth and Space Science, University of Washington,
Seattle, WA, USA
Jeffrey P. Severinghaus
Scripps Institution of Oceanography, University of California San
Diego, La Jolla, CA, USA
Eric J. Steig
Department of Earth and Space Science, University of Washington,
Seattle, WA, USA
Dominic A. Winski
School of Earth and Climate Sciences, University of Maine, Orono,
ME, USA
Climate Change Institute, University of Maine, Orono, ME, USA
Erich C. Osterberg
Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
Tyler J. Fudge
Department of Earth and Space Science, University of Washington,
Seattle, WA, USA
Murat Aydin
Department of Earth System Science, University of California, Irvine, CA, USA
Ekaterina Hood
Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA
Michael Kalk
College of Earth, Ocean, and Atmospheric Sciences, Oregon State
University, Corvallis, OR, USA
Karl J. Kreutz
School of Earth and Climate Sciences, University of Maine, Orono,
ME, USA
Climate Change Institute, University of Maine, Orono, ME, USA
David G. Ferris
Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
Joshua A. Kennedy
Department of Chemistry and Biochemistry, South Dakota State
University, Brookings, SD, USA
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Latest update: 27 Nov 2025
Short summary
A new ice core drilled at the South Pole provides a 54 000-year paleo-environmental record including the composition of the past atmosphere. This paper describes the gas chronology for the South Pole ice core, based on a high-resolution methane record. The new gas chronology, in combination with the existing ice age scale from Winski et al. (2019), allows a model-independent reconstruction of the delta age record.
A new ice core drilled at the South Pole provides a 54 000-year paleo-environmental record...