Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 17
Articles | Volume 25, issue 17
https://doi.org/10.5194/acp-25-10215-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-10215-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 17
Research article
 | 
10 Sep 2025
Research article |  | 10 Sep 2025

Carbonate content and stable isotopic composition of atmospheric aerosol carbon in the Canadian High Arctic

Petr Vodička, Kimitaka Kawamura, Bhagawati Kunwar, Lin Huang, Dhananjay Kumar, Md. Mozammel Haque, Ambarish Pokhrel, Sangeeta Sharma, and Leonard Barrie

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Short summary
Carbonate carbon (CC) is not negligible in Arctic total suspended particles (TSPs). If not considered, CC biases the contribution of elemental and organic carbon. CC content in TSPs was strongly reflected in the δ13C values of total carbon (TC). The carbon contribution from CaCO3 supports the strong dependence of CC and δ13C on Ca. Finally, two hypothetical CC sources were identified based on the analysis of air mass back trajectories: dust resuspension and marine microorganisms.
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