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@ARTICLE{Guglielmetti:61736,
      author       = {Guglielmetti, M. and Schwank, M. and Mätzler, C. and
                      Oberdörster, C. and Vanderborght, J. and Flühler, H.},
      title        = {{FOSMEX}: {F}orest {S}oil {M}oisture {E}xperiments with
                      {M}icrowave {R}adiometry},
      journal      = {IEEE transactions on geoscience and remote sensing},
      volume       = {46},
      issn         = {0196-2892},
      address      = {New York, NY},
      publisher    = {IEEE},
      reportid     = {PreJuSER-61736},
      pages        = {727 - 735},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The microwave Forest Soil Moisture Experiment (FOSMEX) was
                      performed at a deciduous forest site at the Research Centre
                      Julich (Germany). An L- and an X-band radiometer were
                      mounted 100 m above ground and directed to the canopy. The
                      measurements consist of dual- and single-polarized L- and
                      X-band data and simultaneously recorded ground moisture,
                      temperature, and meteorological data. The canopy L-band
                      transmissivity was estimated from a subset of the FOSMEX
                      data, where the ground was masked with a metalized foil. For
                      the foliage-free canopy, the reflecting foil diminished the
                      L-band brightness by approximate to 24 K, whereas brightness
                      increased by approximate to 14 K when the foil was removed
                      from below the foliated canopy. Depending on the assumption
                      made on the scattering albedo of the canopy, the
                      transmissivities were between 0.2 and 0.51. Furthermore, the
                      contribution of the foliage was quantified. Although, the
                      evaluation revealed the semitransparency of the canopy for
                      L-band frequencies, the brightness sensitivity with respect
                      to ground moisture was substantially reduced for all
                      foliation states. The effect of ground surface moisture was
                      explored in an irrigation experiment. The L-band
                      measurements were only affected for a few hours until the
                      water drained through the litter layer. This emphasizes the
                      significance of the presence of litter for soil moisture
                      retrieval from remotely sensed L-band brightness data. The
                      FOSMEX database serves for further testing and improving
                      radiative transfer models used for interpreting microwave
                      data received from future spaceborne L-band radiometers
                      flying over areas comprising a considerable fraction of
                      deciduous forests.},
      keywords     = {J (WoSType)},
      cin          = {ICG-4},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB793},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Geochemistry $\&$ Geophysics / Engineering, Electrical $\&$
                      Electronic / Remote Sensing},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000253734200014},
      doi          = {10.1109/TGRS.2007.914797},
      url          = {https://juser.fz-juelich.de/record/61736},
}