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@ARTICLE{AndreuHayles:836059,
      author       = {Andreu-Hayles, Laia and Ummenhofer, Caroline C. and
                      Barriendos, Mariano and Schleser, Gerhard, Hans and Helle,
                      Gerhard and Leuenberger, Markus and Gutiérrez, Emilia and
                      Cook, Edward R.},
      title        = {400 {Y}ears of summer hydroclimate from stable isotopes in
                      {I}berian trees},
      journal      = {Climate dynamics},
      volume       = {49},
      number       = {1-2},
      issn         = {1432-0894},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {FZJ-2017-05183},
      pages        = {143 - 161},
      year         = {2017},
      abstract     = {Tree rings are natural archives that annually record
                      distinct types of past climate variability depending on the
                      parameters measured. Here, we use ring-width and stable
                      isotopes in cellulose of trees from the northwestern Iberian
                      Peninsula (IP) to understand regional summer hydroclimate
                      over the last 400 years and the associated atmospheric
                      patterns. Correlations between tree rings and climate data
                      demonstrate that isotope signatures in the targeted Iberian
                      pine forests are very sensitive to water availability during
                      the summer period, and are mainly controlled by stomatal
                      conductance. Non-linear methods based on extreme events
                      analysis allow for capturing distinct seasonal climatic
                      variability recorded by tree-ring parameters and asymmetric
                      signals of the associated atmospheric features. Moreover,
                      years with extreme high (low) values in the tree-ring
                      records were characterised by coherent large-scale
                      atmospheric circulation patterns with reduced (enhanced)
                      moisture transport onto the northwestern IP. These analyses
                      of extremes revealed that high/low proxy values do not
                      necessarily correspond to mirror images in the atmospheric
                      anomaly patterns, suggesting different drivers of these
                      patterns and the corresponding signature recorded in the
                      proxies. Regional hydroclimate features across the broader
                      IP and western Europe during extreme wet/dry summers
                      detected by the northwestern IP trees compare favourably to
                      independent multicentury sea level pressure and drought
                      reconstructions for Europe. Historical records also validate
                      our findings that attribute non-linear moisture signals
                      recorded by extreme tree-ring values to distinct large-scale
                      atmospheric patterns and allow for 400-year reconstructions
                      of the frequency of occurrence of extreme conditions in late
                      spring and summer hydroclimate.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000403716500009},
      doi          = {10.1007/s00382-016-3332-z},
      url          = {https://juser.fz-juelich.de/record/836059},
}