The surface waters of the Southern Ocean act as a control valve through which climatically important tracers such as heat, freshwater, and CO₂ are transferred between the atmosphere and the ocean. The process that transports these tracers through the surface mixed layer into the ocean interior is known as ocean ventilation. Changes in ocean ventilation are thought to be important for both rapid transitions of the ocean's global overturning circulation during the last deglaciation and the uptake and storage of excess heat and CO₂ as a consequence of anthropogenic climate change. I show how the interaction between Southern Ocean jets, topographic features, and ocean stratification can lead to rapid changes in Southern Ocean ventilation as a function of wind stress. For increasing winds, this interaction leads from a state in which tracers are confined to the surface mixed layer to a state in which tracers fill the ocean interior. For sufficiently high winds, the jet dynamics abruptly change, allowing the tracer to ventilate a water mass known as Antarctic Intermediate Water in the mid-depth Southern Ocean. Abrupt changes in Antarctic Intermediate Water ventilation have played a major role in rapid climate transitions in Earth's past, and combined with the results presented here, this would suggest that jet dynamics could play a prominent role in contributing to, or even triggering, rapid transitions of the global climate system.

中文翻译：

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打开通往南大洋的窗户：喷射动力学的作用。

南大洋的地表水起着控制阀的作用，通过该阀，气候重要的示踪剂（例如热量，淡水和CO _2）在大气和海洋之间转移。将这些示踪剂通过表面混合层输送到海洋内部的过程称为海洋通风。人们认为，在最后一次冰消期间，海洋通风的变化对于海洋全球翻转循环的快速过渡以及过量热量和CO ₂的吸收和存储都非常重要。人为气候变化的结果。我展示了南大洋急流，地形特征和海洋分层之间的相互作用如何导致南大洋通风随风应力的变化而迅速变化。对于增加的风，这种相互作用从示踪剂被限制在表面混合层的状态导致了示踪剂充满海洋内部的状态。对于足够大的风，射流动力学会突然发生变化，从而使示踪剂可以向南海中部深处的称为南极中间水的水流通风。南极中层水通风的突然变化在地球过去的快速气候变化中起了重要作用，结合此处介绍的结果，这表明射流动力学可以在以下方面发挥重要作用：