Air‐Sea CO2 Fluxes Localized by Topography in a Southern Ocean Channel
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 18, 2023
- Source ID
- 10.1029/2023gl104802
Entities
People
- Madeleine K. Youngs
- Mara A Freilich
- Nicole S. Lovenduski
Organizations
- Brown University
- National Oceanic and Atmospheric Administration
- National Science Foundation
- United States Department of Energy
- University of California, Los Angeles
- University of California, San Diego