The seasonal phases of an Arctic lagoon reveal the discontinuities of pH variability and CO<sub>2</sub> flux at the air–sea interface

Miller, Cale A.; Bonsell, Christina; McTigue, Nathan D.; Kelley, Amanda L.

doi:https://doi.org/10.5194/bg-18-1203-2021

Articles | Volume 18, issue 3

https://doi.org/10.5194/bg-18-1203-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-1203-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 3

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, Christina Bonsell, Nathan D. McTigue, and Amanda L. Kelley

Supplement

https://doi.org/10.5194/bg-18-1203-2021-supplement

Data sets

Circulation dynamics: currents, waves, temperature measurements from moorings in lagoon sites along the Alaska Beaufort Sea coast, 2018-ongoing ver 2 Beaufort Lagoon Ecosystems LTER and J. Kasper https://doi.org/10.6073/pasta/3475cdbb160a9f844aa5ede627c5f6fe

Photosynthetically active radiation (PAR) time series from lagoon sites along the Alaska Beaufort Sea coast, 2018-ongoing ver 1 Beaufort Lagoon Ecosystems LTER, Core Program https://doi.org/10.6073/pasta/ced2cedd430d430d9149b9d7f1919729

Physicochemical water column parameters and hydrographic time series from river, lagoon, and open ocean sites along the Alaska Beaufort Sea coast, 2018-ongoing ver 1 Beaufort Lagoon Ecosystems LTER, Core Program https://doi.org/10.6073/pasta/e0e71c2d59bf7b08928061f546be6a9a

Time series of water column pH from lagoon sites along the Alaska Beaufort Sea coast, 2018-ongoing ver 1 Beaufort Lagoon Ecosystems LTER, Core Program https://doi.org/10.6073/pasta/9305328d0f1ed28fbb2d7cf56c686786

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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.

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

Supplement

Data sets

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