Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
Clim. Past, 13, 93-105, 2017
http://www.clim-past.net/13/93/2017/
doi:10.5194/cp-13-93-2017
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
09 Feb 2017
Temperature variability in the Iberian Range since 1602 inferred from tree-ring records
Ernesto Tejedor1,2,3, Miguel Ángel Saz1,2, José María Cuadrat1,2, Jan Esper3, and Martín de Luis1,2 1University of Zaragoza, 50009 Zaragoza, Spain
2Environmental Sciences Institute of the University of Zaragoza, Zaragoza, Spain
3Department of Geography, Johannes Gutenberg University, 55099 Mainz, Germany
Abstract. Tree rings are an important proxy to understand the natural drivers of climate variability in the Mediterranean Basin and hence to improve future climate scenarios in a vulnerable region. Here, we compile 316 tree-ring width series from 11 conifer sites in the western Iberian Range. We apply a new standardization method based on the trunk basal area instead of the tree cambial age to develop a regional chronology which preserves high- to low-frequency variability. A new reconstruction for the 1602–2012 period correlates at −0.78 with observational September temperatures with a cumulative mean of the 21 previous months over the 1945–2012 calibration period. The new IR2Tmax reconstruction is spatially representative for the Iberian Peninsula and captures the full range of past Iberian Range temperature variability. Reconstructed long-term temperature variations match reasonably well with solar irradiance changes since warm and cold phases correspond with high and low solar activity, respectively. In addition, some annual temperature downturns coincide with volcanic eruptions with a 3-year lag.

Citation: Tejedor, E., Saz, M. Á., Cuadrat, J. M., Esper, J., and de Luis, M.: Temperature variability in the Iberian Range since 1602 inferred from tree-ring records, Clim. Past, 13, 93-105, doi:10.5194/cp-13-93-2017, 2017.
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Short summary
Through this study, and inferred from 316 series of tree-ring width, we developed a maximum temperature reconstruction that is significant for much of the Iberian Peninsula (IP). This reconstruction will not only help to understand the past climate of the IP but also serve to improve future climate change scenarios particularly affecting the Mediterranean area.
Through this study, and inferred from 316 series of tree-ring width, we developed a maximum...
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