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@ARTICLE{Steenpass:12521,
      author       = {Steenpass, C. and Vanderborght, J. and Herbst, M. and
                      Simunek, J. and Vereecken, H.},
      title        = {{E}stimating {S}oil {H}ydraulic {P}roperties from
                      {I}nfrared {M}easurements of {S}oil {S}urface {T}emperatures
                      and {TDR} {D}ata},
      journal      = {Vadose zone journal},
      volume       = {9},
      issn         = {1539-1663},
      address      = {Madison, Wis.},
      publisher    = {SSSA},
      reportid     = {PreJuSER-12521},
      pages        = {910 - 924},
      year         = {2010},
      note         = {This work was financed by the Transregio Collaborative
                      Research Center 32, Patterns in Soil-Vegetation-Atmosphere
                      Systems: Monitoring, Modelling and Data Assimilation. We
                      want to thank Jasper Vrugt, University of California,
                      Irvine, for providing the source code of the global
                      optimizer DREAM.},
      abstract     = {The spatiotemporal development of soil surface temperatures
                      (SST) depends on water availability in the near-surface soil
                      layer. Because the soil loses latent heat during evaporation
                      and water available for evaporation depends on soil
                      hydraulic properties (SHP), the temporal variability of SST
                      should contain information about the near-surface SHP. The
                      objective of this study was to investigate the uncertainties
                      of SHP derived from SST. The HYDRUS-1D code coupled with a
                      global optimizer (DREAM) was used to inversely estimate van
                      Genuchten-Mualem parameters from infrared-measured SST and
                      time domain reflectometry (TDR)-measured water contents.
                      This approach was tested using synthetic and real data,
                      collected during September 2008 from a harrowed silty loam
                      field plot in Selhausen, Germany. The synthetic data
                      illustrated that SHP can be derived from SST and that
                      additional soil water content measurements reduce the
                      uncertainty of the estimated SHP. Unlike for the synthetic
                      experiment with a vertically homogeneous soil profile, a
                      layered soil profile had to be assumed to derive SHP from
                      the real data. Therefore, the uncertainty of SHP derived
                      from real data was considerably larger. Water retention
                      curves of undisturbed soil cores were similar to those
                      estimated from SST and TDR data for the deeper undisturbed
                      soil. The retention curves derived from SST and TDR data for
                      the harrowed topsoil layer were typical for a
                      coarse-textured soil and deviated considerably from the
                      retention curves of soil cores, which were typical for a
                      fine-textured soil and similar to those from the subsoil.},
      keywords     = {J (WoSType)},
      cin          = {IBG-3 / JARA-ENERGY},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118 / $I:(DE-82)080011_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Environmental Sciences / Soil Science / Water Resources},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000287739800011},
      doi          = {10.2136/vzj2009.0176},
      url          = {https://juser.fz-juelich.de/record/12521},
}