Articles | Volume 18, issue 8
https://doi.org/10.5194/tc-18-3741-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-18-3741-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Aug 2024
Research article |
| 22 Aug 2024
| 22 Aug 2024
On the relationship between δO2∕N2 variability and ice sheet surface conditions in Antarctica
Romilly Harris Stuart
CORRESPONDING AUTHOR
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL, CEA-CNRS-UVSQ, Univ. Paris-Saclay, Gif-sur-Yvette, France
Amaëlle Landais
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL, CEA-CNRS-UVSQ, Univ. Paris-Saclay, Gif-sur-Yvette, France
Laurent Arnaud
Institute of Environmental Geosciences, CNRS, INRAE, IRD, Grenoble INP, University of Grenoble Alpes, Grenoble, France
Christo Buizert
College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, USA
Emilie Capron
Institute of Environmental Geosciences, CNRS, INRAE, IRD, Grenoble INP, University of Grenoble Alpes, Grenoble, France
Marie Dumont
Centre d'Etudes de la Neige, Univ. Grenoble Alpes, Université de Toulouse, Météo-France, CNRS, CNRM, Grenoble, France
Quentin Libois
CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France
Robert Mulvaney
British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge, UK
Anaïs Orsi
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL, CEA-CNRS-UVSQ, Univ. Paris-Saclay, Gif-sur-Yvette, France
Department of Earth, Ocean and Atmospheric Sciences, The University of British Columbia, Vancouver, Canada
Ghislain Picard
Institute of Environmental Geosciences, CNRS, INRAE, IRD, Grenoble INP, University of Grenoble Alpes, Grenoble, France
Frédéric Prié
Laboratoire des Sciences du Climat et de l'Environnement, LSCE-IPSL, CEA-CNRS-UVSQ, Univ. Paris-Saclay, Gif-sur-Yvette, France
Jeffrey Severinghaus
Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
Barbara Stenni
Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, Venice, Italy
Patricia Martinerie
Institute of Environmental Geosciences, CNRS, INRAE, IRD, Grenoble INP, University of Grenoble Alpes, Grenoble, France
Data sets
Compilation of δO2/N2 records, and accumulation rate and temperature reconstructions from various polar ice cores R. Harris Stuart https://doi.org/10.5281/zenodo.12571888
Model code and software
The detailed snowpack scheme Crocus and its implementation in SURFEX v7.2 (https://github.com/UMR-CNRM/snowtools) V. Vionnet et al. https://doi.org/10.5194/gmd-5-773-2012
Short summary
Ice core δO2/N2 records are useful dating tools due to their local insolation pacing. A precise understanding of the physical mechanism driving this relationship, however, remain ambiguous. By compiling data from 15 polar sites, we find a strong dependence of mean δO2/N2 on accumulation rate and temperature in addition to the well-documented insolation dependence. Snowpack modelling is used to investigate which physical properties drive the mechanistic dependence on these local parameters.
Ice core δO2/N2 records are useful dating tools due to their local insolation pacing. A precise...
