A tree ring-based hydroclimate reconstruction for eastern Europe reveals large-scale teleconnection patterns

Funder: alfred wegener institute helmholtz centre for polar and marine research; doi: http://dx.doi.org/10.13039/501100003207 Funder: Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) (1014) <jats:title>Abstract</jats:title><jats:p>We present a new bee...

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Bibliographic Details
Main Authors: Roibu, CC, Nagavciuc, V, Ionita, M, Popa, I, Horodnic, SA, Mursa, A, Büntgen, U
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2022
Subjects:
Climate reconstructions
Dendroclimatology
Drought extremes
Eastern Europe
Teleconnection patterns
Tree rings
Beech
Alfred Wegener Institute
North Atlantic
Online Access:https://www.repository.cam.ac.uk/handle/1810/341573
https://doi.org/10.17863/CAM.88998
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Summary:Funder: alfred wegener institute helmholtz centre for polar and marine research; doi: http://dx.doi.org/10.13039/501100003207 Funder: Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) (1014) <jats:title>Abstract</jats:title><jats:p>We present a new beech (<jats:italic>Fagus sylvatica</jats:italic> L.) tree-ring width composite chronology from five natural low-elevation forests in eastern Romania, which represent the species’ continental distribution limit. Our regional beech chronology reflects April–June hydroclimate variability in form of the Standardized Precipitation Evapotranspiration Index over large parts of Romania, Ukraine, and the Republic of Moldova, for which high-resolution paleoclimatic evidence is broadly missing. Most of the reconstructed hydroclimatic extremes back to 1768 CE are confirmed by documentary evidences, and a robust association is found with large-scale atmospheric circulation patterns in the Northern Hemisphere and sea surface temperatures over the North Atlantic. Reconstructed pluvials coincide with a high-pressure system over the North Atlantic Ocean and north-western Europe, and with a low-pressure system over south-western, central and eastern Europe, whereas historical droughts coincide with a high-pressure system over Europe and a low-pressure system over the central part of the Atlantic Ocean. Our study demonstrates the potential to produce well-replicated, multi-centennial beech chronologies for eastern Europe to reconstruct regional hydroclimate variation and better understand the causes and consequences of large-scale teleconnection patterns.</jats:p>

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