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New estimates of Southern Ocean annual net community production revealed by BGC-Argo floats


Su, J and Schallenberg, C and Rohr, T and Strutton, PG and Phillips, HE, New estimates of Southern Ocean annual net community production revealed by BGC-Argo floats, Geophysical Research Letters, 49, (15) Article e2021GL097372. ISSN 0094-8276 (2022) [Refereed Article]

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Copyright Statement

2022. The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) License, ( which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

DOI: doi:10.1029/2021GL097372


Using an expanding Southern Ocean fleet of biogeochemical Argo (BGC-Argo) floats, we developed a novel approach to estimate annual net community production (ANCP) by integrating subsurface oxygen drawdown from all available BGC-Argo oxygen profiles. Our results suggest that, on average, 14% of remineralization occurs between 500 and 1000 m and 15% occurs between the euphotic depth and 100 m. Using the improved methodology, we estimated total basin-integrated ANCP in the Southern Ocean to be 3.89 GT C year-1 suggesting a more important role for the Southern Ocean in regulating oceanic carbon storage, atmospheric CO2 exchange and climate than previously assumed.

Item Details

Item Type:Refereed Article
Keywords:Southern Ocean, primary productivity
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Biological oceanography
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Antarctic and Southern Ocean oceanic processes
UTAS Author:Su, J (Mr Jiaoyang Su)
UTAS Author:Schallenberg, C (Dr Christina Schallenberg)
UTAS Author:Rohr, T (Mr Tyler Rohr)
UTAS Author:Strutton, PG (Professor Peter Strutton)
UTAS Author:Phillips, HE (Associate Professor Helen Phillips)
ID Code:151148
Year Published:2022
Funding Support:Australian Research Council (CE170100023)
Deposited By:Oceans and Cryosphere
Deposited On:2022-07-21
Last Modified:2022-11-16
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