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

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Su, J, Schallenberg, C ORCID: 0000-0002-3073-7500, Rohr, T ORCID: 0000-0001-6599-8068, Strutton, PG ORCID: 0000-0002-2395-9471 and Phillips, HE ORCID: 0000-0002-2941-7577 2022 , 'New estimates of Southern Ocean annual net community production revealed by BGC-Argo floats' , Geophysical Research Letters , pp. 1-21 , doi: 10.1029/2021GL097372.

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Abstract

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 Type: Article
Authors/Creators:Su, J and Schallenberg, C and Rohr, T and Strutton, PG and Phillips, HE
Keywords: Southern Ocean, primary productivity
Journal or Publication Title: Geophysical Research Letters
Publisher: Amer Geophysical Union
ISSN: 0094-8276
DOI / ID Number: 10.1029/2021GL097372
Copyright Information:

This article is protected by copyright. All rights reserved.An edited version of this paper was published by AGU. Copyright 2022 the authors.

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