Articles | Volume 18, issue 8
https://doi.org/10.5194/tc-18-3439-2024
https://doi.org/10.5194/tc-18-3439-2024
Research article
 | 
06 Aug 2024
Research article |  | 06 Aug 2024

The potential of in situ cosmogenic 14CO in ice cores as a proxy for galactic cosmic ray flux variations

Vasilii V. Petrenko, Segev BenZvi, Michael Dyonisius, Benjamin Hmiel, Andrew M. Smith, and Christo Buizert

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Cited articles

Abeysekara, A. U., Alfaro, R., Alvarez, C., et al., HAWC Collaboration, Aartsen, M. G., Ackermann, M., Adams, J. et al., IceCube Collaboration: All-sky Measurement of the Anisotropy of Cosmic Rays at 10 TeV and Mapping of the Local Interstellar Magnetic Field, Astrophys. J., 871, 96, https://doi.org/10.3847/1538-4357/aaf5cc, 2019. 
Adolphi, F., Muscheler, R., Svensson, A., Aldahan, A., Possnert, G., Beer, J., Sjolte, J., Bjorck, S., Matthes, K., and Thieblemont, R.: Persistent link between solar activity and Greenland climate during the Last Glacial Maximum, Nat. Geosci., 7, 662–666, 2014. 
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Balco, G.: Contributions and unrealized potential contributions of cosmogenic-nuclide exposure dating to glacier chronology, 1990-2010, Quaternary Sci. Rev., 30, 3–27, 2011. 
Balco, G.: Glacier Change and Paleoclimate Applications of Cosmogenic-Nuclide Exposure Dating, Annu. Rev. Earth Pl. Sci., 48, 21–48, 2020. 
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Short summary
This manuscript presents the concept for a new proxy for past variations in the galactic cosmic ray flux (GCR). Past variations in GCR flux are important to understand for interpretation of records of isotopes produced by cosmic rays; these records are used for reconstructing solar variations and past land ice extent. The proxy involves using measurements of 14CO in ice cores, which should provide an uncomplicated and precise estimate of past GCR flux variations for the past few thousand years.