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@ARTICLE{Kirdyanov:62960,
      author       = {Kirdyanov, A.V. and Treydte, K. S. and Nikolaev, A. and
                      Helle, G. and Schleser, G. H.},
      title        = {{C}limate signals in tree-ring width, density and
                      delta13{C} from larches in {E}astern {S}iberia ({R}ussia)},
      journal      = {Chemical geology},
      volume       = {252},
      issn         = {0009-2541},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-62960},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We present the first and longest (413 years) dataset on
                      stable carbon isotope ratios in tree-ring cellulose (delta
                      C-13), tree-ring width (TRW), and maximum latewood density
                      (MXD) obtained from larch trees growing on permafrost under
                      continental climate in the Suntar Khayata mountain ridge in
                      Eastern Siberia (Russia). With this first study we calibrate
                      tree-ring parameters against climate quantities, and based
                      on these results assess the potential added value of MXD and
                      especially of delta C-13 complementing TRW analysis for
                      future climate reconstruction purposes. delta C-13
                      chronologies were corrected for human induced changes in
                      atmospheric CO2 since AD 1800. Two different approaches were
                      compared i) a correction referring merely to the decline in
                      atmospheric delta C-13 (delta C-13(atm)) and ii) a
                      correction additionally accounting for the increase in
                      atmospheric partial pressure of CO2. delta C-13 chronologies
                      are characterized by strong signal strength with only 4
                      trees representing the population signal at the site (mean
                      inter-series correlation = 0.71 and EPS = 0.90). delta C-13
                      variation shows low similarity to TRW and MXD, while
                      correlation between TRW and MXD is highly significant.
                      Correlation analysis of tree-ring parameters with gridded
                      instrumental data (Climate Research Unit, CRU TS 2.1) over
                      the AD 1929-2000 calibration period demonstrates that TRW
                      and MXD react as reported from other sites at cold and humid
                      northern latitudes: precipitation plays no significant role,
                      but strong dependencies on monthly mean, maximum and minimum
                      temperatures, particularly of the current summer (June to
                      August), are found (up to r=0.60, p<0.001). Combining
                      instrumental data to a summer season mean (JJA) and TRW and
                      MXD to a growth parameter mean (TRW+MXD), clearly shows the
                      importance of the number of frost days and minimum
                      temperatures during summer (r=0.67, p <0.001) to dominate
                      tree growth and highlights the potential for climate
                      reconstruction. Carbon isotope fixation in tree rings is
                      obviously less controlled by temperature variables. In
                      particular, the frost days and minimum temperature have a
                      much smaller influence on delta C-13 than on tree growth.
                      delta C-13 strongly reacts to current-year July
                      precipitation (r=-0.44, p<0.05) and June-July maximum
                      temperature (r=0.46, p<0.001). All significant (p<0.05)
                      correlation coefficients are higher when using the corrected
                      delta C-13 chronology considering an additional plant
                      physiological response on increasing atmospheric CO2
                      concentration, than using the chronology corrected for delta
                      C-13(atm) changes alone. Spatial distribution of
                      correlations between tree-ring data and climate variables
                      for Eastern Siberia indicates that the summer temperature
                      regime in the studied region is mostly influenced by Arctic
                      air masses, but precipitation in July seems to be brought
                      out from the Pacific region. Both the combined TRW+MXD
                      record and the (513 C record revealed a high reconstruction
                      potential for summer temperature and precipitation,
                      respectively, particularly on decadal and longer-term
                      scales. (C) 2008 Elsevier B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-5},
      ddc          = {550},
      cid          = {I:(DE-Juel1)ICG-5-20090406},
      pnm          = {Geosysteme - Erde im Wandel},
      pid          = {G:(DE-Juel1)FUEK405},
      shelfmark    = {Geochemistry $\&$ Geophysics},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000257538900005},
      doi          = {10.1016/j.chemgeo.2008.01.023},
      url          = {https://juser.fz-juelich.de/record/62960},
}