Climate of the Past
Climate of the Past
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Articles | Volume 19, issue 5
Articles | Volume 19, issue 5
https://doi.org/10.5194/cp-19-999-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/cp-19-999-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 5
Research article
 | 
22 May 2023
Research article |  | 22 May 2023

Methane, ethane, and propane production in Greenland ice core samples and a first isotopic characterization of excess methane

Michaela Mühl, Jochen Schmitt, Barbara Seth, James E. Lee, Jon S. Edwards, Edward J. Brook, Thomas Blunier, and Hubertus Fischer

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Latest update: 20 Nov 2024
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Short summary
Our ice core measurements show that methane, ethane, and propane concentrations are significantly elevated above their past atmospheric background for Greenland ice samples containing mineral dust. The underlying co-production process happens during the classical discrete wet extraction of air from the ice sample and affects previous reconstructions of the inter-polar difference of methane as well as methane stable isotope records derived from dust-rich Greenland ice.
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Special issue
Ice core science at the three poles (CP/TC inter-journal SI)