Climate Dynamics

, Volume 47, Issue 3, pp 937–950

Changes in surface solar radiation in Northeastern Spain over the past six centuries recorded by tree-ring δ13C

  • I. Dorado-Liñán
  • A. Sanchez-Lorenzo
  • E. Gutiérrez Merino
  • O. Planells
  • I. Heinrich
  • G. Helle
  • E. Zorita
Article

DOI: 10.1007/s00382-015-2881-x

Cite this article as:
Dorado-Liñán, I., Sanchez-Lorenzo, A., Gutiérrez Merino, E. et al. Clim Dyn (2016) 47: 937. doi:10.1007/s00382-015-2881-x

Abstract

Although solar radiation at the surface plays a determinant role in carbon discrimination in tree rings, stable carbon isotope chronologies (δ13C) have often been interpreted as a temperature proxy due to the co-variability of temperature and surface solar radiation. Furthermore, even when surface solar radiation is assumed to be the main driver of 13C discrimination in tree rings, δ13C records have been calibrated against sunshine duration or cloud cover series for which longer observational records exists. In this study, we use different instrumental and satellite data over northeast Spain (southern Europe) to identify the main driver of tree-ring 13C discrimination in this region. Special attention is paid to periods in which the co-variability of those climate variables may have been weaker, such as years after large volcanic eruptions. The analysis identified surface solar radiation as the main driver of tree-ring δ13C changes in this region, although the influence of other climatic factors may not be negligible. Accordingly, we suggest that a reconstruction of SSR over the last 600 years is possible. The relation between multidecadal variations of an independent temperature reconstruction and surface solar radiation in this region shows no clear sign, and warmer (colder) periods may be accompanied by both higher and lower surface solar radiation. However, our reconstructed records of surface solar radiation reveals a sunnier Little Ice Age in agreement with other δ13C tree-ring series used to reconstruct sunshine duration in central and northern Europe.

Keywords

Tree rings Stable carbon isotopes Surface solar radiation Dendroclimatology Volcanic eruptions Pyrenees 

Supplementary material

382_2015_2881_MOESM1_ESM.docx (28 kb)
Supplementary material 1 (DOCX 27 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • I. Dorado-Liñán
    • 1
  • A. Sanchez-Lorenzo
    • 2
  • E. Gutiérrez Merino
    • 3
  • O. Planells
    • 3
  • I. Heinrich
    • 4
  • G. Helle
    • 4
  • E. Zorita
    • 5
  1. 1.EcoclimatologyTechnische Universität MünchenMunichGermany
  2. 2.Instituto Pirenaico de Ecología, Consejo Superior de Investigaciones Científicas (IPE–CSIC)ZaragozaSpain
  3. 3.Departamentd’EcologiaUniversitat de BarcelonaBarcelonaSpain
  4. 4.Climate Dynamics and Landscape EvolutionGFZ, German Research Centre for GeosciencesPotsdamGermany
  5. 5.Institute for Coastal ResearchHelmholtz-Zentrum-GeesthachtGeesthachtGermany

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