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@PHDTHESIS{Quade:865211,
      author       = {Quade, Maria},
      title        = {{P}artitioning {W}ater {V}apor {F}luxes by the {U}se of
                      {T}heir {W}ater {S}table {I}sotopologues: {F}rom the {L}ab
                      to the {F}ield},
      volume       = {469},
      school       = {Univ. Bonn},
      type         = {Dissertation},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2019-04745},
      isbn         = {978-3-95806-417-1},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {113},
      year         = {2019},
      note         = {Dissertation, Univ. Bonn, 2019},
      abstract     = {Water stable isotopes are powerful tracers for partitioning
                      of the terrestrial ecosystem water vapor fluxes into
                      process-based components, i.e. evapotranspiration (ET) into
                      soil evaporation (E) and plant transpiration (T). The
                      isotopic methodology for ET artitioning is based on the fact
                      that E and T have distinct water stable isotopic
                      compositions, which in turn are due to each flux being
                      differently affected by isotopic kinetic effects. To use
                      stable isotopologues of water in ET partitioning studies, a
                      good knowledge of the isotopic (equilibrium and kinetic)
                      fractionation effects is crucial. While the
                      temperature-dependent equilibrium fractionation factor is
                      well characterized (Majoube 1971), the kinetic fractionation
                      factor (αK), relevant, e.g., during soil evaporation, needs
                      further investigation. In order to address this knowledge
                      gap, we conducted a series of three different long-term bare
                      soil evaporation experiments (differing in soil-water
                      availability and aerodynamic conditions) to obtain αK
                      values from the collected isotopic data and the inversion of
                      a well-known resistance-totransfer model (i.e., the Craig
                      and Gordon (1965) model). The isotopic composition of the
                      soil water (δs) vapor was monitored non-destructively by
                      using gas-permeable tubing (Rothfuss et al. 2013).The Craig
                      and Gordon (1965) model was used in two different
                      approaches. The first approach uses the Keeling (1958) plot
                      to obtain values for the isotopic composition of the
                      evaporation (δE). The second approach uses the slope of the
                      linear regression between δs 2H and δs 18O. Results showed
                      that the largest source uncertainty in the computation of
                      αK stemmed from the uncertainty associated with the δE
                      values modeled with the Keeling (1958) plot method. In the
                      second approach αK values werewithin the theoretical range
                      proposed by Dongmann et al. (1974) and Mathieu and Bariac
                      (1996), which pointed to the prevalence of the turbulent
                      transport of water vapor under saturated and unsaturated
                      soil conditions.},
      cin          = {IBG-3},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255) / TERENO - Terrestrial Environmental
                      Observatories (TERENO-2008) / IDAS-GHG - Instrumental and
                      Data-driven Approaches to Source-Partitioning of Greenhouse
                      Gas Fluxes: Comparison, Combination, Advancement
                      (BMBF-01LN1313A)},
      pid          = {G:(DE-HGF)POF3-255 / G:(DE-HGF)TERENO-2008 /
                      G:(DE-Juel1)BMBF-01LN1313A},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      urn          = {urn:nbn:de:0001-2019100920},
      url          = {https://juser.fz-juelich.de/record/865211},
}