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000061736 0247_ $$2DOI$$a10.1109/TGRS.2007.914797
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000061736 084__ $$2WoS$$aGeochemistry & Geophysics
000061736 084__ $$2WoS$$aEngineering, Electrical & Electronic
000061736 084__ $$2WoS$$aRemote Sensing
000061736 1001_ $$0P:(DE-HGF)0$$aGuglielmetti, M.$$b0
000061736 245__ $$aFOSMEX: Forest Soil Moisture Experiments with Microwave Radiometry
000061736 260__ $$aNew York, NY$$bIEEE$$c2008
000061736 300__ $$a727 - 735
000061736 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000061736 440_0 $$017961$$aIEEE Transactions on Geoscience and Remote Sensing$$v46$$x0196-2892$$y3
000061736 500__ $$aRecord converted from VDB: 12.11.2012
000061736 520__ $$aThe 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.
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000061736 65320 $$2Author$$acanopy transmissivity
000061736 65320 $$2Author$$aforest
000061736 65320 $$2Author$$amicrowave radiometry
000061736 65320 $$2Author$$aradiative transfer
000061736 65320 $$2Author$$asoil moisture
000061736 7001_ $$0P:(DE-HGF)0$$aSchwank, M.$$b1
000061736 7001_ $$0P:(DE-HGF)0$$aMätzler, C.$$b2
000061736 7001_ $$0P:(DE-Juel1)VDB35190$$aOberdörster, C.$$b3$$uFZJ
000061736 7001_ $$0P:(DE-Juel1)129548$$aVanderborght, J.$$b4$$uFZJ
000061736 7001_ $$0P:(DE-HGF)0$$aFlühler, H.$$b5
000061736 773__ $$0PERI:(DE-600)2027520-1$$a10.1109/TGRS.2007.914797$$gVol. 46, p. 727 - 735$$p727 - 735$$q46<727 - 735$$tIEEE transactions on geoscience and remote sensing$$v46$$x0196-2892$$y2008
000061736 8567_ $$uhttp://dx.doi.org/10.1109/TGRS.2007.914797
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000061736 9131_ $$0G:(DE-Juel1)FUEK407$$bErde und Umwelt$$kP24$$lTerrestrische Umwelt$$vTerrestrische Umwelt$$x0
000061736 9141_ $$y2008
000061736 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
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