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@ARTICLE{Lassabatere:897162,
      author       = {Lassabatere, Laurent and Peyneau, Pierre-Emmanuel and
                      Yilmaz, Deniz and Pollacco, Joseph and Fernández-Gálvez,
                      Jesús and Latorre, Borja and Moret-Fernández, David and Di
                      Prima, Simone and Rahmati, Mehdi and Stewart, Ryan D. and
                      Abou Najm, Majdi and Hammecker, Claude and Angulo-Jaramillo,
                      Rafael},
      title        = {{A} scaling procedure for straightforward computation of
                      sorptivity},
      journal      = {Hydrology and earth system sciences},
      volume       = {25},
      number       = {9},
      issn         = {1607-7938},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2021-03652},
      pages        = {5083 - 5104},
      year         = {2021},
      abstract     = {Sorptivity is a parameter of primary importance in the
                      study of unsaturated flow in soils. This hydraulic parameter
                      is required to model water infiltration into vertical soil
                      profiles. Sorptivity can be directly estimated from the soil
                      hydraulic functions (water retention and hydraulic
                      conductivity curves), using the integral formulation of
                      Parlange (1975). However, calculating sorptivity in this
                      manner requires the prior determination of the soil
                      hydraulic diffusivity and its numerical integration between
                      initial and final saturation degrees, which may be difficult
                      in some situations (e.g., coarse soil with diffusivity
                      functions that are quasi-infinite close to saturation). In
                      this paper, we present a procedure to compute sorptivity
                      using a scaling parameter, cp, that corresponds to the
                      sorptivity of a unit soil (i.e., unit values for all
                      parameters and zero residual water content) that is utterly
                      dry at the initial state and saturated at the final state.
                      The cp parameter was computed numerically and analytically
                      for five hydraulic models: delta (i.e., Green and Ampt),
                      Brooks and Corey, van Genuchten–Mualem, van
                      Genuchten–Burdine, and Kosugi. Based on the results, we
                      proposed brand new analytical expressions for some of the
                      models and validated previous formulations for the other
                      models. We also tabulated the output values so that they can
                      easily be used to determine the actual sorptivity value for
                      any case. At the same time, our numerical results showed
                      that the relation between cp and the hydraulic shape
                      parameters strongly depends on the chosen model. These
                      results highlight the need for careful selection of the
                      proper model for the description of the water retention and
                      hydraulic conductivity functions when estimating
                      sorptivity.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000776480200001},
      doi          = {10.5194/hess-25-5083-2021},
      url          = {https://juser.fz-juelich.de/record/897162},
}