Australia’s ACCESS-CM2 climate model with a higher-resolution ocean-sea ice component (1/4°) ...

• Main Authors: Huneke, Wilma, Hogg, Andy, Dix, Martin, Bi, Dave
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-2196; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018608

<!--!introduction!--> Global coupled ocean-atmosphere models are a valuable tool to study climate variability and to project future changes. Many of the present global coupled models have an ocean component with a low horizontal resolution that does not permit ocean mesoscale eddies. The ocean mesoscale is not only important for the ocean dynamics but can also have an imprint on the atmosphere. Increasing the horizontal resolution of the ocean model component is therefore crucial to improve simulations of the coupled climate system. In this study, a newly developed version of Australia’s ACCESS-CM2 climate model with a higher-resolution ocean-sea ice component (1/4°) is evaluated under present climate conditions against (i) the previous coarser (1°) version and (ii) against the ocean-only counterparts of the ACCESS-OM2 ocean-sea ice model suite. The 1/4° ACCESS-CM2 overall improves the ocean state compared to the 1° version but inhibits a large decadal variability in the upper ocean heat content that ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...