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@ARTICLE{Bormann:3597,
author = {Bormann, H. and Breuer, L. and Gräff, T. and Huisman, J.
A. and Croke, B.},
title = {{A}ssessing the impact of land use change on hydrology by
ensemble modelling ({LUCHEM}) {IV}: {M}odel sensitivity on
data aggregation and spatial (re-)distribution},
journal = {Advances in water resources},
volume = {32},
issn = {0309-1708},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {PreJuSER-3597},
pages = {171 - 192},
year = {2009},
note = {The authors thank the "Deutsche Forschungsgemeinschaft" for
the funding the collaborative research centre 299 "Land use
options for peripheral regions".},
abstract = {This paper analyses the effect of spatial resolution and
distribution of model input data on the results of
regional-scale land use scenarios using three different
hydrological catchment models. A 25 m resolution data set of
a mesoscale catchment and three land use scenarios are used.
Data are systematically aggregated to resolutions up to 2
kill. Land use scenarios are spatially redistributed, both
randomly and topography based. Using these data, water
fluxes are calculated on a daily time step for a 16 year
time period without further calibration. Simulation results
are used to identify grid size, distribution and model
dependent scenario effects. In the case of data aggregation,
all applied models react sensitively to grid size. WASIM and
TOPLATS simulate constant water balances for grid sizes from
50 m to 300-500 m, SWAT is more sensitive to input data
aggregation, simulating constant water balances between 50 m
and 200 m grid size. The calculation of scenario effects is
less robust to data aggregation. The maximum acceptable grid
size reduces to 200-300 m for TOPLATS and WASIM. In case of
spatial distribution, SWAT and TOPLATS are slightly
sensitive to a redistribution of land use (below $1.5\%$ for
water balance terms), whereas WASIM shows almost no
reaction. Because the aggregation effects were stronger than
the redistribution effects, it is concluded that spatial
discretisation is more important than spatial distribution.
As the aggregation effect was mainly associated with a
change in land use fraction, it is concluded that accuracy
of data sets is much more important than a high spatial
resolution. (C) 2008 Elsevier Ltd. All rights reserved.},
keywords = {J (WoSType)},
cin = {ICG-4},
ddc = {550},
cid = {I:(DE-Juel1)VDB793},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Water Resources},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000264512000005},
doi = {10.1016/j.advwatres.2008.01.002},
url = {https://juser.fz-juelich.de/record/3597},
}