Detalls de la publicació.

Article

Any:2019
Autor(s):S. Dangendorf, C. Hay, F. Calafat, M. Marcos, C. Piecuch, K. Berk, J. Jensen
Títol:Persistent acceleration in global sea-level rise since the 1960s
Revista:Nature Climate Change
ISSN:1758-678X
JCR Impact Factor:20.893
Volum:9
Número:9
Pàgines:705-710
D.O.I.:10.1038/s41558-019-0531-8
Web:https://dx.doi.org/10.1038/s41558-019-0531-8
Resum:© 2019, The Author(s), under exclusive licence to Springer Nature Limited.Previous studies reconstructed twentieth-century global mean sea level (GMSL) from sparse tide-gauge records to understand whether the recent high rates obtained from satellite altimetry are part of a longer-term acceleration. However, these analyses used techniques that can only accurately capture either the trend or the variability in GMSL, but not both. Here we present an improved hybrid sea-level reconstruction during 1900–2015 that combines previous techniques at time scales where they perform best. We find a persistent acceleration in GMSL since the 1960s and demonstrate that this is largely (~76%) associated with sea-level changes in the Indo-Pacific and South Atlantic. We show that the initiation of the acceleration in the 1960s is tightly linked to an intensification and a basin-scale equatorward shift of Southern Hemispheric westerlies, leading to increased ocean heat uptake, and hence greater rates of GMSL rise, through changes in the circulation of the Southern Ocean.

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