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@INPROCEEDINGS{Dombrowski:1015013,
author = {Dombrowski, Olga and Brogi, Cosimo and Hendricks-Franssen,
Harrie-Jan and Bogena, Heye and Pisinaras and Andreas,
Panagopoulos and Chatzi, Anna and Babakos, Konstantinos and
Swenson, Sean},
title = {{A}ssessing the impact of irrigation on water storage
dynamics in a {M}editerranean catchment using land surface
modelling},
reportid = {FZJ-2023-03543},
year = {2023},
abstract = {Anthropogenic land use can strongly affect regional water
stocks and fluxes. Irrigation, for instance, greatly
influences soil moisture, which in turn acts as a mediator
between water storage compartments. There has been a growing
effort to represent these processes in land surface models
(LSMs), and thus better simulate the impact of global
changes on water resources. An accurate representation of
irrigation practices and associated processes is therefore
crucial in LSMs when quantifying water storage dynamics and
associated fluxes. However, the ability of LSMs to represent
irrigation management and thus investigate its role in the
water cycle within complex catchments has not yet been
explored in sufficient detail.This study attempts to
quantify the influence of irrigation on water storage
dynamics of the Pinios Hydrological Observatory (PHO), a
small Mediterranean catchment in central Greece, taking the
Community Land Model version 5 (CLM5) as an example. For
this, CLM5 was first applied and tested in two highly
instrumented irrigated apple orchards within the PHO by
using available information on local climate, soil, crop
management and phenology for model set-up and calibration.
Model results were compared to observed apple yield, sap
flow, soil matric potential, and soil moisture. The latter
two were obtained from a distributed sensor network
measuring at three depths (12 locations per field). CLM5 was
able to accurately reproduce the soil moisture response to
irrigation in one of the fields whereas some bias was
apparent in the second field. In a next step, CLM5 was
applied to the entire PHO using regional land use and soil
information. Utilising this model setup, one full and two
deficit irrigation scenarios were implemented over a 7-year
period using local climate data to analyse the impact of
irrigation on soil water storage and groundwater
interactions at the catchment scale. We will demonstrate how
the findings of this study can contribute to understand the
effects of irrigated agriculture on catchment water storage
dynamics and aid in the management of regional water
resources.},
month = {Sep},
date = {2023-09-25},
organization = {2nd TERENO-OZCAR Conference 2023, Bonn
(Germany), 25 Sep 2023 - 28 Sep 2023},
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) / DFG project 357874777 - FOR 2694:
Large-Scale and High-Resolution Mapping of Soil Moisture on
Field and Catchment Scales - Boosted by Cosmic-Ray Neutrons
(357874777) / DFG project 390732324 - EXC 2070: PhenoRob -
Robotik und Phänotypisierung für Nachhaltige
Nutzpflanzenproduktion (390732324)},
pid = {G:(DE-HGF)POF4-2173 / G:(EU-Grant)857125 /
G:(GEPRIS)357874777 / G:(GEPRIS)390732324},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1015013},
}