Articles | Volume 25, issue 11
https://doi.org/10.5194/acp-25-5727-2025
https://doi.org/10.5194/acp-25-5727-2025
Research article
 | 
11 Jun 2025
Research article |  | 11 Jun 2025

A 60-year atmospheric nitrate isotope record from a southeastern Greenland ice core with minimal postdepositional alteration

Zhao Wei, Shohei Hattori, Asuka Tsuruta, Zhuang Jiang, Sakiko Ishino, Koji Fujita, Sumito Matoba, Lei Geng, Alexis Lamothe, Ryu Uemura, Naohiro Yoshida, Joel Savarino, and Yoshinori Iizuka

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Latest update: 09 Aug 2025
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Short summary
Nitrate isotope records in ice cores reveal changes in NO emissions and atmospheric oxidation chemistry driven by human activity. However, UV-driven postdepositional processes can alter nitrate in snow, making snow accumulation rates critical for preserving these records. This study examines nitrate isotopes in a southeastern Greenland ice core, where high snow accumulation minimizes these effects, providing a reliable archive of atmospheric nitrogen cycling.
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