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@ARTICLE{Quade:852670,
      author       = {Quade, Maria and Brüggemann, Nicolas and Graf, Alexander
                      and Vanderborght, Jan and Vereecken, Harry and Rothfuss,
                      Youri},
      title        = {{I}nvestigation of {K}inetic {I}sotopic {F}ractionation of
                      {W}ater {D}uring {B}are {S}oil {E}vaporation},
      journal      = {Water resources research},
      volume       = {54},
      number       = {9},
      issn         = {0043-1397},
      address      = {[New York]},
      publisher    = {Wiley},
      reportid     = {FZJ-2018-05543},
      pages        = {6909-6928},
      year         = {2018},
      abstract     = {The kinetic fractionation factor (αK) controls to a large
                      extent the isotopic enrichment of surface waters during
                      evaporation (E). In contrast to the well-known
                      vapor-to-liquid isotopic equilibrium fractionation factor,
                      αK has still not yet been properly characterized for soil
                      water evaporation. In this study, we investigated the αK
                      daily dynamics during a series of three laboratory
                      experiments differing in soil water availability and
                      aerodynamic conditions. For this, we applied a commonly-used
                      isotopic evaporation model and tested it in two different
                      approaches. First, a two-end member mixing model (“Keeling
                      plot”) was fitted to the measured isotopic composition of
                      the laboratory air water vapor to obtain αK. In a second
                      approach, αK was obtained from the slope of the
                      “evaporation line” in a dual isotopic coordinate system.
                      For both methods, the isotopic composition of the soil water
                      was determined non-destructively and online by sampling the
                      soil water vapor with gas-permeable microporous tubing.
                      Results highlighted the limitation of the first approach, as
                      the determination of the isotopic composition of E with the
                      Keeling plot was challenging with the laboratory setup. The
                      second approach provided αK values within the range
                      $(α_K^(2_H$ ) = 1.0132 ±0.0013; $α_K^(〖18〗_O$ ) =
                      1.0149 ±0.0012) reported in the literature and pointed to
                      the prevalence of turbulent water vapor transport under
                      water-saturated soil conditions, but also at soil water
                      content significantly lower than the saturated value. In a
                      third experiment, temporal dynamics of the atmospheric water
                      vapor intrusion in the topmost soil layer could be observed
                      during an isotopic labeling pulse.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255) / 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-Juel1)BMBF-01LN1313A},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000448088100059},
      doi          = {10.1029/2018WR023159},
      url          = {https://juser.fz-juelich.de/record/852670},
}