Anthropogenic carbon pathways towards the North Atlantic interior revealed by Argo-O₂, neural networks and back-calculations.

ABSTRACT: The subpolar North Atlantic (SPNA) is a region of high anthropogenic CO₂ (C_ant) storage per unit area. Although the average C_ant distribution is well documented in this region, the C_ant pathways towards the ocean interior remain largely unresolved. We used observations from three Argo-O₂ floats spanning 2013-2018 within the SPNA, combined with existing neural networks and back-calculations, to determine the C_ant evolution along the float pathways from a quasi-lagrangian perspective. Our results show that C_ant follows a stepwise deepening along its way through the SPNA. The upper subtropical waters have a stratified C_ant distribution that homogenizes within the winter mixed layer by Subpolar Mode Water f

SUBMITTER: Asselot R 

PROVIDER: S-EPMC10884407 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature