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@ARTICLE{Fetzer:829451,
author = {Fetzer, Thomas and Vanderborght, Jan and Mosthaf, Klaus and
Smits, Kathleen M. and Helmig, Rainer},
title = {{H}eat and water transport in soils and across the
soil-atmosphere interface: 2. {N}umerical analysis},
journal = {Water resources research},
volume = {53},
number = {2},
issn = {0043-1397},
address = {[New York]},
publisher = {Wiley},
reportid = {FZJ-2017-03150},
pages = {1080 - 1100},
year = {2017},
abstract = {In an accompanying paper, we presented an overview of a
wide variety of modeling concepts, varying in complexity,
used to describe evaporation from soil. Using theoretical
analyses, we explained the simplifications and
parameterizations in the different approaches. In this
paper, we numerically evaluate the consequences of these
simplifications and parameterizations. Two sets of
simulations were performed. The first set investigates
lateral variations in vertical fluxes, which emerge from
both homogeneous and heterogeneous porous media, and their
importance to capturing evaporation behavior. When
evaporation decreases from parts of the heterogeneous soil
surface, lateral flow and transport processes in the free
flow and in the porous medium generate feedbacks that
enhance evaporation from wet surface areas. In the second
set of simulations, we assume that the vertical fluxes do
not vary considerably in the simulation domain and represent
the system using one-dimensional models which also consider
dynamic forcing of the evaporation process, for example, due
to diurnal variations in net radiation. Simulated
evaporation fluxes subjected to dynamic forcing differed
considerably between model concepts depending on how vapor
transport in the air phase and the interaction at the
interface between the free flow and porous medium were
represented or parameterized. However, simulated cumulative
evaporation losses from initially wet soil profiles were
very similar between model concepts and mainly controlled by
the desorptivity, Sevap, of the porous medium, which depends
mainly on the liquid flow properties of the porous medium.},
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:000398568800006},
doi = {10.1002/2016WR019983},
url = {https://juser.fz-juelich.de/record/829451},
}