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Spatial and temporal patterns of Southern Ocean ventilation

Abstract:
Ocean ventilation translates atmospheric forcing into the ocean interior. The Southern Ocean is an important ventilation site for heat and carbon and is likely to influence the outcome of anthropogenic climate change. We conduct an extensive backwards-in-time trajectory experiment to identify spatial and temporal patterns of ventilation. Temporally, almost all ventilation occurs between August and November. Spatially, “hotspots” of ventilation account for 60% of open-ocean ventilation on a 30 years timescale; the remaining 40% ventilates in a circumpolar pattern. The densest waters ventilate on the Antarctic shelf, primarily near the Antarctic Peninsula (40%) and the west Ross sea (20%); the remaining 40% is distributed across East Antarctica. Shelf-ventilated waters experience significant densification outside of the mixed layer.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1029/2023GL106716

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author


Publisher:
Wiley
Journal:
Geophysical Research Letters More from this journal
Volume:
51
Issue:
4
Article number:
e2023GL106716
Publication date:
2024-02-12
Acceptance date:
2024-01-24
DOI:
EISSN:
1944-8007
ISSN:
0094-8276


Language:
English
Keywords:
Pubs id:
1728859
Local pid:
pubs:1728859
Deposit date:
2024-03-04

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