Fig. 5: Schematic summarizing causes and consequences of AABW variability in the Australian Antarctic Basin. | Nature Climate Change

Fig. 5: Schematic summarizing causes and consequences of AABW variability in the Australian Antarctic Basin.

From: Recent reduced abyssal overturning and ventilation in the Australian Antarctic Basin

Fig. 5

Freshening of shelf waters, attributed to increased glacial melt in previous studies13,14,21, reduces export of dense water. Reduced export of DSWs slows the lower limb of the overturning circulation. Weaker overturning reduces oxygen transport to the abyss and thins deep well-ventilated layers, causing deep deoxygenation across the basin.

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