Spatial and Temporal Patterns of Southern Ocean Ventilation
Spatial and Temporal Patterns of Southern Ocean Ventilation
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DOI：
10.1029/2023gl106716
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发表时间：
2024-02
影响因子：
5.2
通讯作者：
A. Styles;G. MacGilchrist;Michael J. Bell;David P. Marshall
中科院分区：
文献类型：
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作者：
A. Styles;G. MacGilchrist;Michael J. Bell;David P. Marshall
海洋通风将大气强迫转化为海洋内部。南大洋是热量和碳的重要通风场所，很可能会影响人为气候变化的结果。我们进行了广泛的时间轨迹实验，以确定通风的空间和时间模式。在时间上，几乎所有的通风都发生在8月至11月之间。在空间上，通风的“热点”占30年时间尺度上开放海洋通风的60%;其余40%以环极模式通风。南极洲大陆架上的南极沃茨主要分布在南极半岛附近（40%）和西罗斯海（20%）;其余40%分布在南极洲东部。搁板通风的沃茨在混合层外经历显著的致密化。
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.