Early warning signal for a tipping point suggested by a millennial atlantic multidecadal variability reconstruction

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SUMMARY

    Given the lack of SST measurements on sufficiently long timescales, one way to reconstruct the AMV is to rely on its observed climate impacts and fingerprints in specific paleoclimate proxy records. Previous attempts to reconstruct the AMV over the last millennium have relied on models with paleoclimate data assimilation43, paleoclimate data from a single or a few sites23,27, or statistical regression methods with multiple proxy records as predictors22,44. In this respect, two previous studies22,44 reconstructed the AMV over the last millennium using a principal component regression method and continental proxy data . . .

     

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