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@ARTICLE{Hannes:188335,
author = {Hannes, M. and Wollschläger, U. and Schrader, F. and
Durner, W. and Gebler, S. and Pütz, Thomas and Fank, J. and
von Unold, G. and Vogel, H.-J.},
title = {{H}igh-resolution estimation of the water balance
components from high-precision lysimeters},
journal = {Hydrology and earth system sciences discussions},
volume = {12},
number = {1},
issn = {1812-2116},
address = {Katlenburg-Lindau},
publisher = {Soc.},
reportid = {FZJ-2015-01743},
pages = {569 - 608},
year = {2015},
abstract = {Lysimeters offer the opportunity to determine
precipitation, evapotranspiration and groundwater-recharge
with high accuracy. In contrast to other techniques, like
Eddy-flux systems or evaporation pans, lysimeters provide a
direct measurement of evapotranspiration from a clearly
defined surface area at the scale of a soil profile via the
built-in weighing system. In particular the estimation of
precipitation can benefit from the much higher surface area
compared to typical raingauge systems. Nevertheless,
lysimeters are exposed to several external influences that
could falsify the calculated fluxes. Therefore, the
estimation of the relevant fluxes requires an appropriate
data processing with respect to various error sources. Most
lysimeter studies account for noise in the data by
averaging. However, the effects of smoothing by averaging on
the accuracy of the estimated water balance is rarely
investigated. In this study, we present a filtering scheme,
which is designed to deal with the various kinds of possible
errors. We analyze the influence of averaging times and
thresholds on the calculated water balance. We further
investigate the ability of two adaptive filtering methods
(the Adaptive Window and Adaptive Threshold filter
(AWAT-filter) (Peters et al., 2014) and the consecutively
described synchro-filter) in further reducing the filtering
error. On the basis of the data sets of 18 simultanously
running lysimeters of the TERENO SoilCan research site in
Bad Lauchstädt, we show that the estimation of the water
balance with high temporal resolution and good accuracy is
possible.},
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},
doi = {10.5194/hessd-12-569-2015},
url = {https://juser.fz-juelich.de/record/188335},
}