Climate Dynamics

, Volume 41, Issue 7–8, pp 1685–1701 | Cite as

Winter-to-spring temperature dynamics in Turkey derived from tree rings since AD 1125

  • Ingo Heinrich
  • Ramzi Touchan
  • Isabel Dorado Liñán
  • Heinz Vos
  • Gerhard Helle
Article

Abstract

In the eastern Mediterranean in general and in Turkey in particular, temperature reconstructions based on tree rings have not been achieved so far. Furthermore, centennial-long chronologies of stable isotopes are generally also missing. Recent studies have identified the tree species Juniperus excelsa as one of the most promising tree species in Turkey for developing long climate sensitive stable carbon isotope chronologies because this species is long-living and thus has the ability to capture low-frequency climate signals. We were able to develop a statistically robust, precisely dated and annually resolved chronology back to AD 1125. We proved that variability of δ13C in tree rings of J. excelsa is mainly dependent on winter-to-spring temperatures (January–May). Low-frequency trends, which were associated with the medieval warm period and the little ice age, were identified in the winter-to-spring temperature reconstruction, however, the twentieth century warming trend found elsewhere could not be identified in our proxy record, nor was it found in the corresponding meteorological data used for our study. Comparisons with other northern-hemispherical proxy data showed that similar low-frequency signals are present until the beginning of the twentieth century when the other proxies derived from further north indicate a significant warming while the winter-to-spring temperature proxy from SW-Turkey does not. Correlation analyses including our temperature reconstruction and seven well-known climate indices suggest that various atmospheric oscillation patterns are capable of influencing the temperature variations in SW-Turkey.

Keywords

Tree rings Juniperus excelsa Temperature reconstruction Stable carbon isotopes δ13Climate indices 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Ingo Heinrich
    • 1
  • Ramzi Touchan
    • 2
  • Isabel Dorado Liñán
    • 1
  • Heinz Vos
    • 3
  • Gerhard Helle
    • 1
  1. 1.Helmholtz Centre Potsdam, GFZ German Research Centre for GeosciencesClimate Dynamics and Landscape EvolutionPotsdamGermany
  2. 2.Laboratory of Tree-Ring ResearchUniversity of ArizonaTucsonUSA
  3. 3.Forschungszentrum Jülich, Institute for Chemistry and Dynamics of the GeosphereJülichGermany

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