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@INPROCEEDINGS{Dombrowski:917311,
author = {Dombrowski, Olga and Brogi, Cosimo and Hendricks-Franssen,
Harrie-Jan and Bogena, Heye and Pisinaras, Vassilios and
Panagopoulos, Andreas and Chatzi, Anna and Tsakmakis,
Ioannis and Babakos, Konstantinos},
title = {{M}odeling the {W}ater {F}ootprint of {M}editerranean
{F}ruit {O}rchards with {CLM}5-{F}ruit{T}ree},
reportid = {FZJ-2023-00539},
year = {2022},
abstract = {Land surface models (LSMs) are increasingly being used to
study how irrigated agriculture, the largest consumer of
fresh water globally, affects crop growth, water resources
status, and climate. This is especially of interest in dry
and semi-dry agricultural regions such as the Mediterranean,
where water scarcity, overexploitation and expected climate
change impacts threaten local water resources. The
simulation of these agricultural ecosystems necessitates
comprehensive crop modules. Such modules must consider local
irrigation patterns, crop types, and crop specific
management practices to understand their influence on water
and energy fluxes under present and future climates. This
study explores the water footprint of fruit orchards in the
Pinios Hydrological Observatory (PHO) in central Greece,
using CLM5-FruitTree, a recent development of the Community
Land Model version 5, to include deciduous fruit orchards
and associated management practices. Initially,
CLM5-FruitTree was setup and validated at field scale using
data from two highly instrumented irrigated apple orchards
within the PHO. The simulations used local climate, soil,
crop management and phenology information. Model results
were compared to observed apple yield, sap flow, irrigation
amounts, and soil moisture. The latter was obtained from a
distributed sensor network measuring soil moisture in three
depths at 12 locations per field as well as two cosmic-ray
neutron soil moisture sensors. The model was able to
reproduce the soil moisture response to irrigation
satisfactorily when the local irrigation schedule was
considered. The simulated irrigation amount indicated that
around $45\%$ less water than the amount applied by the
farmer could be used without reduction in yield. This
suggests potential improvements in irrigation efficiency by
reducing losses through evaporation or deep percolation.
However, possible model weaknesses in the representation of
soil properties and water fluxes should be further
addressed. Successively, a modeling case for the PHO is set
up to study the regional irrigation water consumption and
the local groundwater aquifer recharge. Results from this
study could help local authorities in the definition of
water policies and serve as a basis for climate impact
studies on regional irrigation management.},
month = {Dec},
date = {2022-12-12},
organization = {AGU Fall Meeting 2022, Chicago (USA),
12 Dec 2022 - 16 Dec 2022},
subtyp = {Other},
cin = {IBG-3},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217) / ATLAS - Agricultural Interoperability and
Analysis System (857125)},
pid = {G:(DE-HGF)POF4-2173 / G:(EU-Grant)857125},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/917311},
}