EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
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New data from the 40 year old Dye3 core

Thomas Blunier1, Janani Venkatesh1, David Aaron Soestmeyer1, Jesper Baldtzer Liisberg1, Rachael Rhodes2, James Andrew Menking3, Jeffrey P. Severinghaus4, Meg Harlan1, Helle Astrid Kjær1, and Paul Vallelonga1
Thomas Blunier et al.
  • 1University of Copenhagen, Niels Bohr Institute, Physics of Ice, Climate and Earth, Copenhagen, Denmark (
  • 2University of Cambridge, Department of Earth Sciences, UK
  • 3College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, USA
  • 4Scripps Institution of Oceanography, USA

The Dye3 core was drilled at Dye3 (65°11’N, 43°50’W) in 1979 – 1981. The core has been analyzed for numerous components over the last decades. We measured remaining sections, the Younger Dryas and a larger portion of the last glacial, in a continuous flow setup in fall 2019. Here we focus on gas measurements. We measured methane, δ15N, δ40Ar, and the elemental ratio of Ar and N2. We present the continuous flow setup for measuring those components in parallel and first results with a focus on the exact timing of changes in methane and δ15N and δ40Ar at the Younger Dryas and Dansgaard-Oeschger transitions.

How to cite: Blunier, T., Venkatesh, J., Soestmeyer, D. A., Liisberg, J. B., Rhodes, R., Menking, J. A., Severinghaus, J. P., Harlan, M., Kjær, H. A., and Vallelonga, P.: New data from the 40 year old Dye3 core, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-13557,, 2020

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