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Article Dans Une Revue Nature Communications Année : 2022

Tracking westerly wind directions over Europe since the middle Holocene

1 High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC)
2 Research Center for Future Earth, National Taiwan University, Taipei
3 LTRR - Laboratory of Tree-Ring Research [University of Arizona]
4 Universität Innsbruck [Innsbruck]
5 Research Center for Future Earth, National Taiwan University, Taipei
6 CEPAM - Culture et Environnements, Préhistoire, Antiquité, Moyen-Age
7 GEOAZUR 7329 - Géoazur
8 Department of Earth System Science, University of California, Irvine
9 HNHP - Histoire naturelle de l'Homme préhistorique
10 IPH - Institut de Paléontologie Humaine
11 Department of Geography Science, Fujian Normal University
12 College of Geography Science, Nanjing Normal University
13 NTNU - National Taiwan Normal University
14 Department of Ocean Science & Engineering, Southern University of Science and Technology
15 Department of Geography and Environmental Sciences, Northumbria University, Newcastle
16 Department of Civilizations and Forms of Knowledge, University of Pisa
17 Archaeological Superintendency of Liguria
18 Toirano Cave, 17055, Toirano
19 Department of Natural History Sciences, Faculty of Science, Hokkaido University
20 Research Center for Environmental Changes, Academia Sinica, Taipei
21 Department of Physics, University of Toronto
22 University of Toronto at Mississauga
23 Department of Earth Sciences, University of Pisa
24 INGV - Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Pisa
25 IGAG-CNR, Area della Ricerca di Roma RM1
26 Xjtu - Xi'an Jiaotong University
Christoph Spötl
Horng-Sheng Mii

Résumé

Abstract The variability of the northern westerlies has been considered as one of the key elements for modern and past climate evolution. Their multiscale behavior and underlying control mechanisms, however, are incompletely understood, owing to the complex dynamics of Atlantic sea-level pressures. Here, we present a multi-annually resolved record of the westerly drift over the past 6,500 years from northern Italy. In combination with more than 20 other westerly-sensitive records, our results depict the non-stationary westerly-affected regions over mainland Europe on multi-decadal to multi-centennial time scales, showing that the direction of the westerlies has changed with respect to the migrations of the North Atlantic centers of action since the middle Holocene. Our findings suggest the crucial role of the migrations of the North Atlantic dipole in modulating the westerly-affected domain over Europe, possibly modulated by Atlantic Ocean variability.
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hal-03910609 , version 1 (02-01-2023)

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Hsun-Ming Hu, Valerie Trouet, Christoph Spötl, Hsien-Chen Tsai, Wei-Yi Chien, et al.. Tracking westerly wind directions over Europe since the middle Holocene. Nature Communications, 2022, 13 (1), pp.7866. ⟨10.1038/s41467-022-34952-9⟩. ⟨hal-03910609⟩
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