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- Title
Atlantic origin of asynchronous European interdecadal hydroclimate variability.
- Authors
Zanchettin, Davide; Toniazzo, Thomas; Taricco, Carla; Rubinetti, Sara; Rubino, Angelo; Tartaglione, Nazario
- Abstract
Discharge time series of major large-catchment European rivers are known to display significant decadal and interdecadal fluctuations. However, the hydroclimate variability causing such fluctuations remains poorly understood, particularly due to a lack of a spatio-temporal integrated assessment. Here, we demonstrate for the first time that European hydroclimate variability is dominated by a meridional delayed oscillation characterized by a lag of approximately 5 years in interdecadal discharge fluctuations of continental (northern) European rivers with respect to those of Euro-Mediterranean (southern) rivers. We demonstrate a connection of this coherent signal with the large-scale atmospheric circulation over the North Atlantic, and suggest a hitherto unexplored multiannual atmosphere-ocean mechanism in the subpolar North Atlantic at its root.
- Subjects
NORTH Atlantic Region; EUROPE; ATMOSPHERIC circulation; RIVERS; OCEAN-atmosphere interaction; CLIMATE change
- Publication
Scientific Reports, 2019, Vol 9, Issue 1, pN.PAG
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-019-47428-6