Ocean Science
Ocean Science
OS
Articles | Volume 20, issue 3
Articles | Volume 20, issue 3
https://doi.org/10.5194/os-20-725-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-20-725-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 3
Research article
 | 
11 Jun 2024
Research article |  | 11 Jun 2024

Anthropogenic CO2, air–sea CO2 fluxes, and acidification in the Southern Ocean: results from a time-series analysis at station OISO-KERFIX (51° S–68° E)

Nicolas Metzl, Claire Lo Monaco, Coraline Leseurre, Céline Ridame, Gilles Reverdin, Thi Tuyet Trang Chau, Frédéric Chevallier, and Marion Gehlen

Supplement

https://doi.org/10.5194/os-20-725-2024-supplement

Data sets

Surface Ocean CO2 Atlas Database Version 2022 (SOCATv2022) D. C. E. Bakker et al. https://doi.org/10.25921/1h9f-nb73

Global Ocean Data Analysis Project version 2.2021 (GLODAPv2.2021) S. Lauvset et al. https://doi.org/10.25921/ttgq-n825

Dissolved inorganic carbon (DIC), total alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations during the R/V Marion Dufresne cruise OISO-01 (EXPOCODE 35MF19980121) in the Indian Ocean from 1998-01-21 Claire Lo Monaco and Nicolas Metzl https://doi.org/10.3334/cdiac/otg.carina_35mf19980121

Global Ocean Surface Carbon: MULTIOBS_GLO_BIO_CARBON_SURFACE_REP_015_008 T. T. T. Chau et al. https://doi.org/10.48670/moi-00047

Download
Short summary
In the southern Indian Ocean, south of the polar front, an observed increase of sea surface fCO2 and a decrease of pH over 1985–2021 are mainly driven by anthropogenic CO2 uptake, but in the last decade (2010–2020) fCO2 and pH were stable in summer, highlighting the competitive balance between anthropogenic CO2 and primary production. In the water column the increase of anthropogenic CO2 concentrations leads to migration of the aragonite saturation state from 600 m in 1985 up to 400 m in 2021.
Read more