Temporal dynamics of surface ocean carbonate chemistry in response to natural and simulated upwelling events during the 2017 coastal El Niño near Callao, Peru

Chen, Shao-Min; Riebesell, Ulf; Schulz, Kai G.; von der Esch, Elisabeth; Achterberg, Eric P.; Bach, Lennart T.

doi:https://doi.org/10.5194/bg-19-295-2022

Articles | Volume 19, issue 2

https://doi.org/10.5194/bg-19-295-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Ecological and biogeochemical functioning of the coastal upwelling...

https://doi.org/10.5194/bg-19-295-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 2

Research article

|

19 Jan 2022

Research article |

| 19 Jan 2022

Temporal dynamics of surface ocean carbonate chemistry in response to natural and simulated upwelling events during the 2017 coastal El Niño near Callao, Peru

Shao-Min Chen, Ulf Riebesell, Kai G. Schulz, Elisabeth von der Esch, Eric P. Achterberg, and Lennart T. Bach

Supplement

https://doi.org/10.5194/bg-19-295-2022-supplement

Data sets

KOSMOS 2017 Peru mesocosm study: carbonate chemistry data Shao-Min Chen, Ulf Riebesell, Kai G. Schulz, Elisabeth von der Esch, Eric P. Achterberg, and Lennart T. Bach https://doi.pangaea.de/10.1594/PANGAEA.933337

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Short summary

Oxygen minimum zones in the ocean are characterized by enhanced carbon dioxide (CO₂) levels and are being further acidified by increasing anthropogenic atmospheric CO₂. Here we report CO₂ system measurements in a mesocosm study offshore Peru during a rare coastal El Niño event to investigate how CO₂ dynamics may respond to ongoing ocean deoxygenation. Our observations show that nitrogen limitation, productivity, and plankton community shift play an important role in driving the CO₂ dynamics.