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Key Role of Internal Ocean Dynamics in Atlantic Multidecadal Variability During the Last Half Century
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2018
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Source: Geophysical Research Letters, 45(24)
[PDF-1.84 MB]
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Journal Title:Geophysical Research Letters
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Description:This study presents multiple lines of evidence from observations and model simulations that support a key role for ocean dynamics, rather than external forcings, in Atlantic multidecadal variability (AMV) during the last half century. Observed AMV fingerprints considered here include the low-frequency spatiotemporal evolution of sea surface temperature, surface heat fluxes, and deep ocean hydrography. While largely absent in the forced response of a large ensemble historical simulations (LENSs), these fingerprints are clearly discernible in a long control simulation where the variability is purely internal. Further evidence derives from initialized decadal prediction simulations, which exhibit much higher skill at predicting
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Source:Geophysical Research Letters, 45(24)
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ISSN:0094-8276;1944-8007;
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Rights Information:Other
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