Recent slowing of Arctic sea ice melt tied to multidecadal NAO variability.

Specifically, from the 1950s to the 1990s, the decline was relatively slow, but after the 1990s, the decrease rate accelerated to a significant trend of −11.3 ± 3.3% per decade, reaching a minimum by 2012, consistent with previous studies 28 .

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Without removing linear trends, the correlation coefficients among the three datasets are approximately 0.99 (Supplementary Table 1 ); even after removing trends, the correlations among the three remain highly significant (Supplementary Table 2 ), suggesting the strong consistency of these observational sea ice datasets.

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