Observational evidence for on-shelf heat transport driven by dense water export in the Weddell Sea

Elin Darelius (), Kjersti Daae, Vår Dundas, Ilker Fer, Hartmut H. Hellmer, Markus Janout, Keith W. Nicholls, Jean-Baptiste Sallée and Svein Østerhus
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Elin Darelius: University of Bergen and the Bjerknes Centre for climate Research
Kjersti Daae: University of Bergen and the Bjerknes Centre for climate Research
Vår Dundas: University of Bergen and the Bjerknes Centre for climate Research
Ilker Fer: University of Bergen and the Bjerknes Centre for climate Research
Hartmut H. Hellmer: Helmholtz Centre for Polar and Marine Research
Markus Janout: Helmholtz Centre for Polar and Marine Research
Keith W. Nicholls: British Antarctic Survey
Jean-Baptiste Sallée: Sorbonne Université, CNRS, LOCEAN
Svein Østerhus: NORCE Norwegian Research Centre AS and the Bjerknes Centre for Climate Research

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract The transport of oceanic heat towards the Antarctic continental margin is central to the mass balance of the Antarctic Ice Sheet. Recent modeling efforts challenge our view on where and how the on-shelf heat flux occurs, suggesting that it is largest where dense shelf waters cascade down the continental slope. Here we provide observational evidence supporting this claim. Using records from moored instruments, we link the downslope flow of dense water from the Filchner overflow to upslope and on-shelf flow of warm water.

Date: 2023
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DOI: 10.1038/s41467-023-36580-3

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