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@ARTICLE{Vanderborght:12520,
author = {Vanderborght, J. and Graf, A. and Steenpass, C. and
Scharnagl, B. and Prolingheuer, N. and Herbst, M. and
Hendricks-Franssen, H.-J. and Vereecken, H.},
title = {{W}ithin-{F}ield {V}ariability of {B}are {S}oil
{E}vaporation {D}erived from {E}ddy {C}ovariance
{M}easurements},
journal = {Vadose zone journal},
volume = {9},
issn = {1539-1663},
address = {Madison, Wis.},
publisher = {SSSA},
reportid = {PreJuSER-12520},
pages = {943-954},
year = {2010},
note = {This research was supported by the German Research
Foundation DFG (Transregional Collaborative Research Centre
32-Patterns in Soil-Vegetation-Atmosphere Systems:
Monitoring, modelling and data assimilation). We thank
Marius Schmidt and Karl Schneider from the University of
Cologne for providing meteorologic data from the Selhausen
test site and Axel Knaps for providing us with meteorologic
data from the Forschungszentrum Julich. A. Graf would like
to thank the DFG for funding through the project GR 2687/3-1
"Links between local scale and catchment scale measurements
and modelling of gas exchange processes over land
surfaces."},
abstract = {Bare soil evaporation was measured with the eddy-covariance
method at the Selhausen field site. The site has a distinct
gradient in soil texture, with a considerably higher stone
content at the upper part of the field. We investigated the
effect of different soil properties in the upper and lower
parts of the field on evaporation using eddy covariance (EC)
measurements that were combined with a footprint model.
Because only one EC station was available, simultaneous
evaporation measurements from the two field parts were not
available. Therefore, measurements were put into the context
of meteorologic and soil hydrologic conditions. Meteorologic
conditions were represented by the potential evaporation,
i.e., the maximum evaporation that is determined by the
energy available for evaporation. The influence of
precipitation and soil hydrologic conditions on the actual
evaporation rate was represented by a simple soil
evaporation model. The amount of water that could be
evaporated at the potential rate from the lower part of the
field was found to be large and considerably larger than
from the upper part of the field. The difference in
evaporation led to threefold larger predicted percolation or
runoff in the upper than the lower part of the field.
Simulations using the Richards equation were able to
reproduce the differences in evaporation between the lower
and upper parts of the field and relate them to the
different groundwater table depths in the two parts of the
field.},
keywords = {J (WoSType)},
cin = {IBG-3 / JARA-HPC},
ddc = {550},
cid = {I:(DE-Juel1)IBG-3-20101118 / $I:(DE-82)080012_20140620$},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Environmental Sciences / Soil Science / Water Resources},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000287739800013},
doi = {10.2136/vzj2009.0159},
url = {https://juser.fz-juelich.de/record/12520},
}