Articles | Volume 19, issue 1
Biogeosciences, 19, 93–115, 2022
https://doi.org/10.5194/bg-19-93-2022
Biogeosciences, 19, 93–115, 2022
https://doi.org/10.5194/bg-19-93-2022
Research article
06 Jan 2022
Research article | 06 Jan 2022

Derivation of seawater pCO2 from net community production identifies the South Atlantic Ocean as a CO2 source

Daniel J. Ford et al.

Related authors

Identifying the biological control of the interannual and long-term variations in South Atlantic air-sea CO2 flux
Daniel J. Ford, Gavin H. Tilstone, Jamie D. Shutler, and Vassilis Kitidis
Biogeosciences Discuss., https://doi.org/10.5194/bg-2022-54,https://doi.org/10.5194/bg-2022-54, 2022
Preprint under review for BG
Short summary

Related subject area

Biogeochemistry: Air - Sea Exchange
Wintertime process study of the North Brazil Current rings reveals the region as a larger sink for CO2 than expected
Léa Olivier, Jacqueline Boutin, Gilles Reverdin, Nathalie Lefèvre, Peter Landschützer, Sabrina Speich, Johannes Karstensen, Matthieu Labaste, Christophe Noisel, Markus Ritschel, Tobias Steinhoff, and Rik Wanninkhof
Biogeosciences, 19, 2969–2988, https://doi.org/10.5194/bg-19-2969-2022,https://doi.org/10.5194/bg-19-2969-2022, 2022
Short summary
New constraints on biological production and mixing processes in the South China Sea from triple isotope composition of dissolved oxygen
Hana Jurikova, Osamu Abe, Fuh-Kwo Shiah, and Mao-Chang Liang
Biogeosciences, 19, 2043–2058, https://doi.org/10.5194/bg-19-2043-2022,https://doi.org/10.5194/bg-19-2043-2022, 2022
Short summary
Tidal mixing of estuarine and coastal waters in the western English Channel is a control on spatial and temporal variability in seawater CO2
Richard P. Sims, Michael Bedington, Ute Schuster, Andrew J. Watson, Vassilis Kitidis, Ricardo Torres, Helen S. Findlay, James R. Fishwick, Ian Brown, and Thomas G. Bell
Biogeosciences, 19, 1657–1674, https://doi.org/10.5194/bg-19-1657-2022,https://doi.org/10.5194/bg-19-1657-2022, 2022
Short summary
Identifying the biological control of the interannual and long-term variations in South Atlantic air-sea CO2 flux
Daniel J. Ford, Gavin H. Tilstone, Jamie D. Shutler, and Vassilis Kitidis
Biogeosciences Discuss., https://doi.org/10.5194/bg-2022-54,https://doi.org/10.5194/bg-2022-54, 2022
Preprint under review for BG
Short summary
A seamless ensemble-based reconstruction of surface ocean pCO2 and air–sea CO2 fluxes over the global coastal and open oceans
Thi Tuyet Trang Chau, Marion Gehlen, and Frédéric Chevallier
Biogeosciences, 19, 1087–1109, https://doi.org/10.5194/bg-19-1087-2022,https://doi.org/10.5194/bg-19-1087-2022, 2022
Short summary

Cited articles

Amari, S. I., Murata, N., Müller, K. R., Finke, M., and Yang, H. H.: Asymptotic statistical theory of overtraining and cross-validation, I T. Neural Networ., 8, 985–996, https://doi.org/10.1109/72.623200, 1997. 
Arnone, V., González-Dávila, M., and Magdalena Santana-Casiano, J.: CO2 fluxes in the South African coastal region, Mar. Chem., 195, 41–49, https://doi.org/10.1016/j.marchem.2017.07.008, 2017. 
Banks, A. C., Vendt, R., Alikas, K., Bialek, A., Kuusk, J., Lerebourg, C., Ruddick, K., Tilstone, G., Vabson, V., Donlon, C., and Casal, T.: Fiducial reference measurements for satellite ocean colour (FRM4SOC), Remote Sens.-basel, 12, 1322, https://doi.org/10.3390/RS12081322, 2020. 
Behrenfeld, M. J. and Falkowski, P. G.: Photosynthetic rates derived from satellite-based chlorophyll concentration, Limnol. Oceanogr., 42, 1–20, https://doi.org/10.4319/lo.1997.42.1.0001, 1997. 
Download
Short summary
This study identifies the most accurate biological proxy for the estimation of seawater pCO2 fields, which are key to assessing the ocean carbon sink. Our analysis shows that the net community production (NCP), the balance between photosynthesis and respiration, was more accurate than chlorophyll a within a neural network scheme. The improved pCO2 estimates, based on NCP, identified the South Atlantic Ocean as a net CO2 source, compared to a CO2 sink using chlorophyll a.
Altmetrics
Final-revised paper
Preprint