Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 22, issue 24
Articles | Volume 22, issue 24
https://doi.org/10.5194/acp-22-15637-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-22-15637-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 24
Research article
 | 
14 Dec 2022
Research article |  | 14 Dec 2022

Photolytic modification of seasonal nitrate isotope cycles in East Antarctica

Pete D. Akers, Joël Savarino, Nicolas Caillon, Olivier Magand, and Emmanuel Le Meur

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Latest update: 27 Oct 2025
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Short summary
Nitrate isotopes in Antarctic ice do not preserve the seasonal isotopic cycles of the atmosphere, which limits their use to study the past. We studied nitrate along an 850 km Antarctic transect to learn how these cycles are changed by sunlight-driven chemistry in the snow. Our findings suggest that the snow accumulation rate and other environmental signals can be extracted from nitrate with the right sampling and analytical approaches.
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