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Climate variability

Natural causes of Arctic sea-ice loss

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Arctic sea-ice cover has declined precipitously in recent decades. Now research suggests that a sizeable fraction of this observed historical decline could have been caused by internal climate variability rather than by human-induced warming.

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Figure 1: September Arctic sea-ice extent.

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Correspondence to Neil Swart.

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Swart, N. Natural causes of Arctic sea-ice loss. Nature Clim Change 7, 239–241 (2017). https://doi.org/10.1038/nclimate3254

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