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

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

doi:https://doi.org/10.5194/acp-25-10215-2025

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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https://doi.org/10.5194/acp-25-10215-2025-supplement

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Carbonate content and stable isotopic composition of atmospheric aerosol carbon in the Canadian High Arctic P. Vodička https://doi.org/10.5281/zenodo.16994150

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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.