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@ARTICLE{Graf:171809,
      author       = {Graf, Alexander and Bogena, Heye and Drüe, Clemens and
                      Hardelauf, Horst and Pütz, Thomas and Heinemann, Günther
                      and Vereecken, Harry},
      title        = {{S}patiotemporal relations between water budget components
                      and soil water content in a forested tributary catchment},
      journal      = {Water resources research},
      volume       = {50},
      number       = {6},
      issn         = {0043-1397},
      address      = {Washington, DC},
      publisher    = {AGU},
      reportid     = {FZJ-2014-05371},
      pages        = {4837 - 4857},
      year         = {2014},
      abstract     = {We examined 3 years of measured daily values of all major
                      water budget components (precipitation P, potential
                      evapotranspiration PET, actual evapotranspiration ET, and
                      runoff R) and volumetric soil water content θ of a small,
                      forested catchment located in the west of Germany. The
                      spatial distribution of θ was determined from a wireless
                      sensor network of 109 points with 3 measurement depths each;
                      ET was calculated from eddy covariance tower measurements.
                      The water budget was dominantly energy-limited, with ET
                      amounting to approximately 90 $\%$ of PET, and a runoff
                      ratio R/P of 56 $\%.$ P, ET and R closed the long-term water
                      budget with a residual of $2\%$ of precipitation. On the
                      daily timescale, the residual of the water budget was larger
                      than on the annual timescale, and explained to a moderate
                      extent by θ (R² = 0.40). Wavelet analysis revealed
                      sub-weekly timescales, presumably dominated by unaccounted
                      fast-turnover storage terms such as interception, as a major
                      source of uncertainty in water balance closure. At weekly
                      resolution, soil water content explained more than half (R²
                      = 0.62) of the residual. By means of combined empirical
                      orthogonal function and cluster analysis, two slightly
                      different spatial patterns of θ could be identified that
                      were associated with mean θ values below and above 0.35
                      cm³/cm³, respectively. The timing of these patterns as
                      well as the varying coherence between PET, ET and soil water
                      content responded to changes in water availability,
                      including a moderate response to the European drought in
                      spring 2011.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {TERENO - Terrestrial Environmental Observatories
                      (TERENO-2008) / 246 - Modelling and Monitoring Terrestrial
                      Systems: Methods and Technologies (POF2-246) / 255 -
                      Terrestrial Systems: From Observation to Prediction
                      (POF3-255) / DFG project 15232683 - TRR 32: Muster und
                      Strukturen in Boden-Pflanzen-Atmosphären-Systemen:
                      Erfassung, Modellierung und Datenassimilation (15232683)},
      pid          = {G:(DE-HGF)TERENO-2008 / G:(DE-HGF)POF2-246 /
                      G:(DE-HGF)POF3-255 / G:(GEPRIS)15232683},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000340430400017},
      doi          = {10.1002/2013WR014516},
      url          = {https://juser.fz-juelich.de/record/171809},
}