The impacts of climate change on Southern Ocean overturning circulation and subduction ...
A multi-model comparison method was used to diagnose the projected changes of the rates of subduction, temperature and salinity properties, for the Southern Ocean upper limb water masses, Sub-Antarctic Mode Water (SAMW) and Antarctic Intermediate Water (AAIW). The corresponding changes in the surfac...
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| Format: | Thesis |
| Language: | unknown |
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University Of Tasmania
2023
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| Online Access: | https://dx.doi.org/10.25959/23233310.v1 https://figshare.utas.edu.au/articles/thesis/The_impacts_of_climate_change_on_Southern_Ocean_overturning_circulation_and_subduction/23233310/1 |
| Summary: | A multi-model comparison method was used to diagnose the projected changes of the rates of subduction, temperature and salinity properties, for the Southern Ocean upper limb water masses, Sub-Antarctic Mode Water (SAMW) and Antarctic Intermediate Water (AAIW). The corresponding changes in the surface heat and freshwater fluxes, and in the overturning circulation were also diagnosed. SAMW and AAIW ventilate the subtropical gyres, carrying heat, and dissolved gases into the interior. Changes in the subduction of these water masses can significantly alter the Southern Ocean uptake of anthropogenic CO2 . The results were partitioned into three analyses: a detailed assessment of the output from the CSIRO-Mk3.5 climate system model, a multi-model comparison of seven Intergovernmental Panel on Climate Change (IPCC) models simulating the late 20th century observed trends, and projected 21st century climate changes in the seven models.‚ÄûvÑvÑ Overall the seven models are able to produce observed spatial patterns ... |
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