Southern Ocean water masses in CMIP6: Historical state and future projections ...
<!--!introduction!--> We examine the representation of Southern Ocean water mass properties, circulation and transformation in an ensemble of CMIP6 models, under historical climate forcing conditions and future climate scenarios. By using a dynamically defined water mass classification scheme...
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Online Access: | https://dx.doi.org/10.57757/iugg23-1901 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017666 |
| Summary: | <!--!introduction!--> We examine the representation of Southern Ocean water mass properties, circulation and transformation in an ensemble of CMIP6 models, under historical climate forcing conditions and future climate scenarios. By using a dynamically defined water mass classification scheme based on physical characteristics we are able to compare water masses across a range of models, well as within single models where water mass properties change under climate forcing. We find that under strong climate forcing scenarios the heat content of SubAntarctic Mode Water (SAMW), Antarctic Intermediate Water (AAIW) and Circumpolar Deep Water (CDW) all increase consistently across models, while the volume of Antarctic Bottom Water (AABW) declines significantly. Importantly this change is strongly modulated by using dynamic definitions. These analyses are complimented by Walin budgets, identifying the factors driving change in water mass volumes, transformation and formation rates. There is a consistent ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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