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Direct observational evidence of strong CO2 uptake in the Southern Ocean.
Dong, Yuanxu; Bakker, Dorothee C E; Bell, Thomas G; Yang, Mingxi; Landschützer, Peter; Hauck, Judith; Rödenbeck, Christian; Kitidis, Vassilis; Bushinsky, Seth M; Liss, Peter S.
Afiliación
  • Dong Y; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, UK.
  • Bakker DCE; Plymouth Marine Laboratory, Plymouth, UK.
  • Bell TG; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, UK.
  • Yang M; Plymouth Marine Laboratory, Plymouth, UK.
  • Landschützer P; Plymouth Marine Laboratory, Plymouth, UK.
  • Hauck J; Flanders Marine Institute (VLIZ), InnovOcean Campus, Ostend, Belgium.
  • Rödenbeck C; Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany.
  • Kitidis V; Max Planck Institute for Biogeochemistry, Jena, Germany.
  • Bushinsky SM; Plymouth Marine Laboratory, Plymouth, UK.
  • Liss PS; School of Ocean and Earth Science and Technology, Department of Oceanography, University of Hawai'i at Manoa, Honolulu, HI, USA.
Sci Adv ; 10(30): eadn5781, 2024 Jul 26.
Article en En | MEDLINE | ID: mdl-39047102
ABSTRACT
The Southern Ocean is the primary region for the uptake of anthropogenic carbon dioxide (CO2) and is, therefore, crucial for Earth's climate. However, the Southern Ocean CO2 flux estimates reveal substantial uncertainties and lack direct validation. Using seven independent and directly measured air-sea CO2 flux datasets, we identify a 25% stronger CO2 uptake in the Southern Ocean than shipboard dataset-based flux estimates. Accounting for upper ocean temperature gradients and insufficient temporal resolution of flux products can bridge this flux gap. The gas transfer velocity parameterization is not the main reason for the flux disagreement. The profiling float data-based flux products and biogeochemistry models considerably underestimate the observed CO2 uptake, which may be due to the lack of representation of small-scale high-flux events. Our study suggests that the Southern Ocean may take up more CO2 than previously recognized, and that temperature corrections should be considered, and a higher resolution is needed in data-based bulk flux estimates.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos