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We use new atmosphere-only experiments from the Polar-Amplification-MIP of CMIP6 to further explain how the dynamic responses in the atmosphere relate to the pattern of sea ice loss in the Arctic on multi-decadal time-scales. We find exciting new results that suggest that Arctic sea ice loss can also impact the southern hemisphere, while Antarctic sea ice loss can impact the northern hemisphere, and we propose possible atmospheric mechanisms to explain this linkage. We also highlight the importance of large ensembles to differentiate between robust responses and atmospheric noise.

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