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@ARTICLE{Dimitrov:276306,
author = {Dimitrov, M. and Vanderborght, J. and Kostov, K. G. and
Debecker, B. and Schulze Lammers, P. and Damerow, L. and
Vereecken, H.},
title = {{S}oil {H}ydraulic {P}arameters of {B}are {S}oil {P}lots
with {D}ifferent {S}oil {S}tructure {I}nversely {D}erived
from {L}-{B}and {B}rightness {T}emperatures},
journal = {Vadose zone journal},
volume = {14},
number = {8},
issn = {1539-1663},
address = {Madison, Wis.},
publisher = {SSSA},
reportid = {FZJ-2015-06767},
year = {2015},
abstract = {The soil structure and the hydraulic properties of the top
soil layer control water exchanges between the soil and the
atmosphere. We used L-band radiometry to infer the hydraulic
properties of the top layer of three field plots with
different soil structure.The structure of the surface layer
of the soil is strongly influenced by soil tillage
practices, with important consequences for the hydraulic
properties and soil moisture dynamics in the top soil layer.
In this study, during four 28-d periods, we monitored L-band
brightness temperatures and infrared (IR) temperatures over
bare silt loam soil plots with different soil surface
structure: tilled, seedbed, and compacted plots. Differences
in absolute and normalized L-band brightness temperatures
between the plots indicated that plot specific roughness,
soil moisture contents, and soil hydraulic properties might
be inverted from L-band brightness temperatures using a
coupled radiative transfer, roughness correction, and soil
hydrological model. The inversely estimated surface
roughness parameters compared well with those derived from
laser profiler measurements. The estimated saturated water
contents of the tilled and seedbed plots were larger than
the one of the compacted plot, and the unsaturated hydraulic
conductivity was smaller in the former plots than in the
compacted plot for more negative pressure heads. These
differences in hydraulic properties translated into larger
dynamics of the simulated soil moisture during a 28-d
measurement period in the tilled and seedbed plots than in
the compacted plot. This difference could be confirmed
qualitatively but not quantitatively by in situ soil
moisture measurements. Furthermore, differences in simulated
actual evaporation rates between the plots were confirmed by
observed differences in measured IR temperatures. The
results indicate that effects of soil management on soil
surface roughness and soil hydraulic properties could be
inferred from L-band brightness temperatures.},
cin = {IBG-3},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000362065400002},
doi = {10.2136/vzj2014.09.0133},
url = {https://juser.fz-juelich.de/record/276306},
}