Air‐Sea CO2 Fluxes Localized by Topography in a Southern Ocean Channel

Details

• Journal Title:
  Geophysical Research Letters
• Personal Author:
  Youngs, Madeleine K. ; Freilich, Mara A. ; Lovenduski, Nicole S.
• NOAA Program & Office:
  NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information)
• Description:
  Air‐sea exchange of carbon dioxide (CO2) in the Southern Ocean plays an important role in the global carbon budget. Previous studies have suggested that flow around topographic features of the Southern Ocean enhances the upward supply of carbon from the deep to the surface, influencing air‐sea CO2 exchange. Here, we investigate the role of seafloor topography on the transport of carbon and associated air‐sea CO2 flux in an idealized channel model. We find elevated CO2 outgassing upstream of a seafloor ridge, driven by anomalous advection of dissolved inorganic carbon. Argo‐like Lagrangian particles in our channel model sample heterogeneously in the vicinity of the seafloor ridge, which could impact float‐based estimates of CO2 flux.
• Keywords:
  • General Earth and Planetary Sciences
  • Geophysics
• Source:
  Geophysical Research Letters, 50(18)
• DOI:
  https://doi.org/10.1029/2023gl104802
• ISSN:
  0094-8276 ; 1944-8007
• Format:
  PDF
• Publisher:
  American Geophysical Union (AGU)
• Document Type:
  Journal Article
• License:
  https://creativecommons.org/licenses/by/4.0/
• Rights Information:
  CC BY
• Compliance:
  Library
• Download URL:
  https://repository.library.noaa.gov/view/noaa/58440/noaa_58440_DS1.pdf
• File Type:
  [PDF - 1.69 MB]
• Collection(s):
  National Environmental Satellite and Data Information Service (NESDIS)
• Main Document Checksum:
  urn:sha256:cea1322ae82ae08a25710343f14cbe4d3b0f2540991061a9320fc77f1b51b72e