Antarctic Bottom Water export pathways, variability and dynamics ...

• Main Author: Sholeninova, Polina
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; Australian Antarctic Basin; Australian-Antarctic Basin; Ross Sea; Southern Ocean; Adelie Land; Antarc*
• Online Access: https://dx.doi.org/10.57757/iugg23-3774; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020771

<!--!introduction!--> Antarctic Bottom Water (AABW) composes the lower limb of the meridional overturning circulation regulating the Earth's climate, carbon cycle and marine biological productivity. Recent studies have reported changes in AABW across the Southern Ocean, including freshening, warming and contraction of the AABW layer. Due to Antarctica's remoteness and harsh conditions, in-situ observations are limited and do not provide enough spatial and temporal coverage to fully reconstruct the circulation and variability of AABW. In contrast, the global ocean model ACCESS-OM2 provides high-resolution data and, unlike earlier models, represents the AABW formation more realistically. With a focus on the Australian-Antarctic Basin and varieties of AABW formed in the Ross Sea and near the Adelie Land coast, we investigate AABW export pathways and their variability in ACCESS-OM2 with a 0.1-degree horizontal resolution. We use the concentration and horizontal fluxes of passive dye tracers to determine ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...