Articles | Volume 18, issue 3
Biogeosciences, 18, 1203–1221, 2021
https://doi.org/10.5194/bg-18-1203-2021
Biogeosciences, 18, 1203–1221, 2021
https://doi.org/10.5194/bg-18-1203-2021

Research article 16 Feb 2021

Research article | 16 Feb 2021

The seasonal phases of an Arctic lagoon reveal the discontinuities of pH variability and CO2 flux at the air–sea interface

Cale A. Miller et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (28 Dec 2020) by Jean-Pierre Gattuso
AR by Cale Miller on behalf of the Authors (09 Jan 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to technical corrections (11 Jan 2021) by Jean-Pierre Gattuso
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Short summary
We report here the first year-long high-frequency pH data set for an Arctic lagoon that captures ice-free and ice-covered seasons. pH and salinity correlation varies by year as we observed positive correlation and independence. Photosynthesis is found to drive high pH values, and small changes in underwater solar radiation can result in rapid decreases in pH. We estimate that arctic lagoons may act as sources of CO2 to the atmosphere, potentially offsetting the Arctic Ocean's CO2 sink capacity.
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