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@ARTICLE{Hannes:203255,
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 = {{A} comprehensive filtering scheme for high-resolution
estimation of the water balance components from
high-precision lysimeters},
journal = {Hydrology and earth system sciences},
volume = {19},
number = {8},
issn = {1607-7938},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {FZJ-2015-05236},
pages = {3405 - 3418},
year = {2015},
abstract = {Large weighing lysimeters are currently the most precise
method to directly measure all components of the terrestrial
water balance in parallel via the built-in weighing system.
As lysimeters are exposed to several external forces such as
management practices or wind influencing the weighing data,
the calculated fluxes of precipitation and
evapotranspiration can be altered considerably without
having applied appropriate corrections to the raw data.
Therefore, adequate filtering schemes for obtaining most
accurate estimates of the water balance components are
required. In this study, we use data from the TERENO
(TERrestrial ENvironmental Observatories) SoilCan research
site in Bad Lauchstädt to develop a comprehensive filtering
procedure for high-precision lysimeter data, which is
designed to deal with various kinds of possible errors
starting from the elimination of large disturbances in the
raw data resulting e.g., from management practices all the
way to the reduction of noise caused e.g., by moderate wind.
Furthermore, we analyze the influence of averaging times and
thresholds required by some of the filtering steps on the
calculated water balance and investigate the ability of two
adaptive filtering methods (the adaptive window and adaptive
threshold filter (AWAT filter; Peters et al., 2014), and a
new synchro filter applicable to the data from a set of
several lysimeters) to further reduce the filtering error.
Finally, we take advantage of the data sets of all 18
lysimeters running in parallel at the Bad Lauchstädt site
to evaluate the performance and accuracy of the proposed
filtering scheme. For the tested time interval of 2 months,
we show that the estimation of the water balance with high
temporal resolution and good accuracy is possible. The
filtering code can be downloaded from the journal website as
Supplement to this publication.},
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:000360653600005},
doi = {10.5194/hess-19-3405-2015},
url = {https://juser.fz-juelich.de/record/203255},
}