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Stable oxygen isotopes in Romanian oak tree rings record summer droughts and associated large-scale circulation patterns over Europe

Viorica Nagavciuc, Monica Ionita, Aurel Perșoiu, Ionel Popa, Neil Loader Orcid Logo, Danny McCarroll

Climate Dynamics, Pages: 1 - 12

Swansea University Authors: Neil Loader Orcid Logo, Danny McCarroll

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DOI (Published version): 10.1007/s00382-018-4530-7

Abstract

We present the first annual oxygen isotope record (1900 – 2016) from the latewood (LW) cellulose of oak trees (Quercus robur) from NW Romania. As expected, the results correlate negatively with summer relative humidity, sunshine duration and precipitation and positively with summer maximum temperatu...

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Published in: Climate Dynamics
ISSN: 0930-7575 1432-0894
Published: Berlin Springer 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa46055
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Abstract: We present the first annual oxygen isotope record (1900 – 2016) from the latewood (LW) cellulose of oak trees (Quercus robur) from NW Romania. As expected, the results correlate negatively with summer relative humidity, sunshine duration and precipitation and positively with summer maximum temperature. Spatial correlation analysis reveals a clear signal reflecting drought conditions at a European scale. Interannual variability is influenced by large-scale atmospheric circulation and by surface temperatures in the North Atlantic Ocean and the Mediterranean Sea. There is considerable potential to produce long and well-replicated oak tree ring stable isotope chronologies in Romania which would allow reconstructions of both regional drought and large-scale circulation variability over southern and central Europe.
Keywords: Oak, δ18O, Relative Humidity, Dendrochronology, Atmospheric circulation
College: Faculty of Science and Engineering
Start Page: 1
End Page: 12

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